LaCrOS: Replace defined(OS_CHROMEOS) with BUILDFLAG(IS_ASH)

The change is mostly mechanical replacing defined(OS_CHROMEOS) with BUILDFLAG(IS_ASH) and GN variable is_chromeos with is_ash. Only the insertion of "//build:chromeos_buildflags" into appropriate deps in BUILD.gn is done semi-manualy. The change should not change the behaviour of any build.

This is in preparation to switching lacros build from target_os=linux to target_os=chromeos so that lacros does not include any additional code due the switch.

Please note that any new defined(OS_CHROMEOS) and is_chromeos introduced to should be consistent with the new meaning.

Please refer to this short document http://go/lacros-replace-chromeos-macro-with-ash for full context.

Bug: 1052397
Change-Id: I12e6a89c1e06b7223f37e9d916e1c101d1f8b8e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2494405
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Yuta Hijikata <ythjkt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820518}

diff --git a/media/gpu/BUILD.gn b/media/gpu/BUILD.gn
index 59c5e41..5fcda1c 100644
--- a/media/gpu/BUILD.gn
+++ b/media/gpu/BUILD.gn

@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
+import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//gpu/vulkan/features.gni")
@@ -290,6 +291,7 @@
   deps = [
     ":buildflags",
     "//base",
+    "//build:chromeos_buildflags",
     "//media",
     "//media/parsers",
     "//ui/gfx:buffer_types",
@@ -438,6 +440,7 @@
       "test:helpers",
       "//base",
       "//base/test:test_support",
+      "//build:chromeos_buildflags",
       "//media:test_support",
       "//media/gpu",
       "//media/gpu/test:test_helpers",
@@ -496,7 +499,7 @@
   ]
   sources = [ "h264_decoder_unittest.cc" ]
 
-  if (is_chromeos && (use_v4l2_codec || use_vaapi)) {
+  if (is_ash && (use_v4l2_codec || use_vaapi)) {
     deps += [ "//media/gpu/chromeos:unit_tests" ]
   }
   if (use_vaapi) {

diff --git a/media/gpu/args.gni b/media/gpu/args.gni
index 9672fba1..237858f 100644
--- a/media/gpu/args.gni
+++ b/media/gpu/args.gni

@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/chromeos/ui_mode.gni")
+
 declare_args() {
   # Indicates if V4L plugin is used.
   use_v4lplugin = false
@@ -31,5 +33,5 @@
 declare_args() {
   # VA-API also allows decoding of images, but we don't want to use this
   # outside of chromeos, even if video decoding is enabled.
-  use_vaapi_image_codecs = use_vaapi && is_chromeos
+  use_vaapi_image_codecs = use_vaapi && is_ash
 }

diff --git a/media/gpu/chromeos/BUILD.gn b/media/gpu/chromeos/BUILD.gn
index d9c66039..80fcfb3 100644
--- a/media/gpu/chromeos/BUILD.gn
+++ b/media/gpu/chromeos/BUILD.gn

@@ -158,6 +158,7 @@
   deps = [
     ":chromeos",
     "//base/test:test_support",
+    "//build:chromeos_buildflags",
     "//media:test_support",
     "//media/gpu:buildflags",
     "//media/gpu/test:frame_file_writer",

diff --git a/media/gpu/chromeos/image_processor_test.cc b/media/gpu/chromeos/image_processor_test.cc
index 84c35352..c13ee59 100644
--- a/media/gpu/chromeos/image_processor_test.cc
+++ b/media/gpu/chromeos/image_processor_test.cc

@@ -12,6 +12,7 @@
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "media/base/video_frame.h"
 #include "media/base/video_frame_layout.h"
 #include "media/base/video_types.h"
@@ -222,7 +223,7 @@
   EXPECT_TRUE(ip_client->WaitForFrameProcessors());
 }
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
 // We don't yet have the function to create Dmabuf-backed VideoFrame on
 // platforms except ChromeOS. So MemToDmabuf test is limited on ChromeOS.
 TEST_P(ImageProcessorParamTest, ConvertOneTime_DmabufToMem) {
@@ -286,7 +287,7 @@
   EXPECT_EQ(ip_client->GetNumOfProcessedImages(), 1u);
   EXPECT_TRUE(ip_client->WaitForFrameProcessors());
 }
-#endif  // defined(OS_CHROMEOS)
+#endif  // BUILDFLAG(IS_ASH)
 
 // BGRA -> NV12
 // I420 -> NV12
@@ -334,7 +335,7 @@
                       std::make_tuple(kNV12Image180, kNV12Image90),
                       std::make_tuple(kNV12Image180, kNV12Image)));
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
 // TODO(hiroh): Add more tests.
 // MEM->DMABUF (V4L2VideoEncodeAccelerator),
 #endif

diff --git a/media/gpu/ipc/service/BUILD.gn b/media/gpu/ipc/service/BUILD.gn
index fe51b14..e644ece 100644
--- a/media/gpu/ipc/service/BUILD.gn
+++ b/media/gpu/ipc/service/BUILD.gn

@@ -38,6 +38,7 @@
     "//media/gpu",
   ]
   deps = [
+    "//build:chromeos_buildflags",
     "//gpu/command_buffer/service:gles2",
     "//gpu/ipc/service",
     "//media:media_buildflags",

diff --git a/media/gpu/ipc/service/vda_video_decoder.cc b/media/gpu/ipc/service/vda_video_decoder.cc
index 576d1b9..aceed50f 100644
--- a/media/gpu/ipc/service/vda_video_decoder.cc
+++ b/media/gpu/ipc/service/vda_video_decoder.cc

@@ -13,6 +13,7 @@
 #include "base/location.h"
 #include "base/logging.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "gpu/config/gpu_driver_bug_workarounds.h"
 #include "gpu/config/gpu_info.h"
 #include "gpu/config/gpu_preferences.h"
@@ -277,7 +278,7 @@
   // (https://crbug.com/929565). We should support reinitialization for profile
   // changes. We limit this support as small as possible for safety.
   const bool is_profile_change =
-#if defined(OS_CHROMEOS) && BUILDFLAG(USE_VAAPI)
+#if BUILDFLAG(IS_ASH) && BUILDFLAG(USE_VAAPI)
       config_.profile() != config.profile();
 #else
       false;

diff --git a/media/gpu/test/BUILD.gn b/media/gpu/test/BUILD.gn
index 675e565..12a8e2a 100644
--- a/media/gpu/test/BUILD.gn
+++ b/media/gpu/test/BUILD.gn

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/ui.gni")
 import("//media/gpu/args.gni")
 
@@ -39,6 +40,7 @@
   deps = [
     ":helpers",
     ":test_helpers",
+    "//build:chromeos_buildflags",
     "//media/gpu",
   ]
 }
@@ -51,6 +53,7 @@
   ]
   deps = [
     ":helpers",
+    "//build:chromeos_buildflags",
     "//media/gpu",
     "//ui/gfx/codec:codec",
   ]
@@ -153,6 +156,7 @@
     ":helpers",
     ":video_player",
     ":video_test_environment",
+    "//build:chromeos_buildflags",
     "//media/gpu",
   ]
 }
@@ -204,6 +208,7 @@
     ]
     deps = [
       ":helpers",
+      "//build:chromeos_buildflags",
       "//media:test_support",
       "//media/gpu",
       "//media/gpu/chromeos",
@@ -214,7 +219,7 @@
   }
 }
 
-if (is_chromeos) {
+if (is_ash) {
   static_library("local_gpu_memory_buffer_manager") {
     testonly = true
     sources = [

diff --git a/media/gpu/test/image_processor/image_processor_client.cc b/media/gpu/test/image_processor/image_processor_client.cc
index 4375c45..8111230 100644
--- a/media/gpu/test/image_processor/image_processor_client.cc
+++ b/media/gpu/test/image_processor/image_processor_client.cc

@@ -14,6 +14,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/synchronization/waitable_event.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/video_frame.h"
 #include "media/base/video_frame_layout.h"
@@ -156,7 +157,7 @@
                            CreateVideoFrameFromImage(input_image).get(),
                            *input_layout, VideoFrame::STORAGE_OWNED_MEMORY);
   } else {
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
     ASSERT_TRUE_OR_RETURN_NULLPTR(
         input_storage_type == VideoFrame::STORAGE_DMABUFS ||
         input_storage_type == VideoFrame::STORAGE_GPU_MEMORY_BUFFER);

diff --git a/media/gpu/test/video_frame_file_writer.cc b/media/gpu/test/video_frame_file_writer.cc
index 3778613..3945b214 100644
--- a/media/gpu/test/video_frame_file_writer.cc
+++ b/media/gpu/test/video_frame_file_writer.cc

@@ -13,6 +13,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "media/gpu/video_frame_mapper.h"
 #include "media/gpu/video_frame_mapper_factory.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -127,7 +128,7 @@
   base::SStringPrintf(&filename, FILE_PATH_LITERAL("frame_%04zu_%dx%d"),
                       frame_index, visible_size.width(), visible_size.height());
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
   // Create VideoFrameMapper if not yet created. The decoder's output pixel
   // format is not known yet when creating the VideoFrameWriter. We can only
   // create the VideoFrameMapper upon receiving the first video frame.
@@ -160,7 +161,7 @@
   DCHECK_CALLED_ON_VALID_SEQUENCE(writer_thread_sequence_checker_);
 
   auto mapped_frame = video_frame;
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
   if (video_frame->storage_type() == VideoFrame::STORAGE_DMABUFS ||
       video_frame->storage_type() == VideoFrame::STORAGE_GPU_MEMORY_BUFFER) {
     CHECK(video_frame_mapper_);
@@ -205,7 +206,7 @@
   DCHECK_CALLED_ON_VALID_SEQUENCE(writer_thread_sequence_checker_);
 
   auto mapped_frame = video_frame;
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
   if (video_frame->storage_type() == VideoFrame::STORAGE_DMABUFS ||
       video_frame->storage_type() == VideoFrame::STORAGE_GPU_MEMORY_BUFFER) {
     CHECK(video_frame_mapper_);

diff --git a/media/gpu/test/video_frame_validator.cc b/media/gpu/test/video_frame_validator.cc
index 09e0f29..b862296 100644
--- a/media/gpu/test/video_frame_validator.cc
+++ b/media/gpu/test/video_frame_validator.cc

@@ -15,6 +15,7 @@
 #include "base/strings/stringprintf.h"
 #include "base/system/sys_info.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "media/base/video_frame.h"
 #include "media/gpu/buildflags.h"
 #include "media/gpu/macros.h"
@@ -236,7 +237,7 @@
 MD5VideoFrameValidator::Validate(scoped_refptr<const VideoFrame> frame,
                                  size_t frame_index) {
   DCHECK_CALLED_ON_VALID_SEQUENCE(validator_thread_sequence_checker_);
-#if defined(OS_CHROMEOS) || BUILDFLAG(IS_LACROS)
+#if BUILDFLAG(IS_ASH) || BUILDFLAG(IS_LACROS)
   // b/149808895: There is a bug in the synchronization on mapped buffers, which
   // causes the frame validation failure. The bug is due to some missing i915
   // patches in kernel v3.18. The bug will be fixed if the kernel is upreved to
@@ -256,7 +257,7 @@
     if (is_skylake)
       usleep(10);
   }
-#endif  // defined(OS_CHROMEOS) || BUILDFLAG(IS_LACROS)
+#endif  // BUILDFLAG(IS_ASH) || BUILDFLAG(IS_LACROS)
   if (frame->format() != validation_format_) {
     frame = ConvertVideoFrame(frame.get(), validation_format_);
   }

diff --git a/media/gpu/test/video_player/video_player_test_environment.cc b/media/gpu/test/video_player/video_player_test_environment.cc
index d85c7d5..86be228 100644
--- a/media/gpu/test/video_player/video_player_test_environment.cc
+++ b/media/gpu/test/video_player/video_player_test_environment.cc

@@ -7,6 +7,7 @@
 #include <utility>
 
 #include "base/system/sys_info.h"
+#include "build/chromeos_buildflags.h"
 #include "media/base/video_types.h"
 #include "media/gpu/test/video.h"
 #include "media/gpu/test/video_player/video_decoder_client.h"
@@ -64,7 +65,7 @@
   // Note: buddy, guado and rikku support import mode for H.264 and VP9, but for
   // VP8 they use a different video decoder (V4L2 instead of VAAPI) and don't
   // support import mode.
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
   constexpr const char* kImportModeBlocklist[] = {
       "buddy",      "guado",      "guado-cfm", "guado-kernelnext", "nyan_big",
       "nyan_blaze", "nyan_kitty", "rikku",     "rikku-cfm"};
@@ -72,7 +73,7 @@
   import_supported_ = (std::find(std::begin(kImportModeBlocklist),
                                  std::end(kImportModeBlocklist),
                                  board) == std::end(kImportModeBlocklist));
-#endif  // defined(OS_CHROMEOS)
+#endif  // BUILDFLAG(IS_ASH)
 
   // VideoDecoders always require import mode to be supported.
   DCHECK(import_supported_ || implementation_ == DecoderImplementation::kVDA);

diff --git a/media/gpu/v4l2/BUILD.gn b/media/gpu/v4l2/BUILD.gn
index 9a999e4..7b5b8bf 100644
--- a/media/gpu/v4l2/BUILD.gn
+++ b/media/gpu/v4l2/BUILD.gn

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/gpu/args.gni")
@@ -108,7 +109,7 @@
     deps += [ ":libv4l2_stubs" ]
   }
 
-  if (is_chromeos) {
+  if (is_ash) {
     sources += [
       "v4l2_jpeg_encode_accelerator.cc",
       "v4l2_jpeg_encode_accelerator.h",

diff --git a/media/gpu/vaapi/BUILD.gn b/media/gpu/vaapi/BUILD.gn
index d811256..df51107 100644
--- a/media/gpu/vaapi/BUILD.gn
+++ b/media/gpu/vaapi/BUILD.gn

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/chromeos/ui_mode.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/gpu/args.gni")
@@ -99,7 +100,7 @@
     "//ui/gl",
   ]
 
-  if (is_chromeos) {
+  if (is_ash) {
     sources += [
       "vaapi_jpeg_encode_accelerator.cc",
       "vaapi_jpeg_encode_accelerator.h",
@@ -167,6 +168,7 @@
   ]
   deps = [
     ":libva_stubs",
+    "//build:chromeos_buildflags",
     "//third_party/libyuv",
     "//ui/base:features",
     "//ui/gfx:memory_buffer",
@@ -242,7 +244,7 @@
 }
 
 # TODO(https://crbug.com/1043007): remove is_chromeos.
-if (is_chromeos) {
+if (is_ash) {
   source_set("jpeg_decoder_unit_test") {
     testonly = true
     sources = [ "vaapi_jpeg_decoder_unittest.cc" ]
@@ -300,13 +302,14 @@
     ":vaapi_utils_unittest",
     "//base",
     "//base/test:test_support",
+    "//build:chromeos_buildflags",
     "//gpu",
     "//media/gpu/test:helpers",
     "//testing/gtest",
   ]
 
   # TODO(https://crbug.com/1043007): remove is_chromeos.
-  if (is_chromeos) {
+  if (is_ash) {
     deps += [
       ":jpeg_decoder_unit_test",
       ":webp_decoder_unit_test",

diff --git a/media/gpu/vaapi/vaapi_unittest.cc b/media/gpu/vaapi/vaapi_unittest.cc
index f9484430..653f593 100644
--- a/media/gpu/vaapi/vaapi_unittest.cc
+++ b/media/gpu/vaapi/vaapi_unittest.cc

@@ -22,6 +22,7 @@
 #include "base/strings/string_split.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
+#include "build/chromeos_buildflags.h"
 #include "gpu/config/gpu_driver_bug_workarounds.h"
 #include "media/gpu/vaapi/vaapi_wrapper.h"
 
@@ -38,7 +39,7 @@
     {VP8PROFILE_ANY, VAProfileVP8Version0_3},
     {VP9PROFILE_PROFILE0, VAProfileVP9Profile0},
     {VP9PROFILE_PROFILE2, VAProfileVP9Profile2},
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
     // TODO(hiroh): Remove if-macro once libva for linux-chrome is upreved to
     // 2.9.0 or newer.
     // https://source.chromium.org/chromium/chromium/src/+/master:build/linux/sysroot_scripts/generated_package_lists/sid.amd64
@@ -64,7 +65,7 @@
     {"VAProfileVP8Version0_3", VAProfileVP8Version0_3},
     {"VAProfileVP9Profile0", VAProfileVP9Profile0},
     {"VAProfileVP9Profile2", VAProfileVP9Profile2},
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
     // TODO(hiroh): Remove if-macro once libva for linux-chrome is upreved to
     // 2.9.0 or newer.
     // https://source.chromium.org/chromium/chromium/src/+/master:build/linux/sysroot_scripts/generated_package_lists/sid.amd64

diff --git a/media/gpu/vaapi/vaapi_wrapper.cc b/media/gpu/vaapi/vaapi_wrapper.cc
index b7bb0cb..373016d 100644
--- a/media/gpu/vaapi/vaapi_wrapper.cc
+++ b/media/gpu/vaapi/vaapi_wrapper.cc

@@ -37,6 +37,7 @@
 #include "base/system/sys_info.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "ui/base/ui_base_features.h"
 
 #include "media/base/media_switches.h"
@@ -353,7 +354,7 @@
           {VP9PROFILE_PROFILE2, VAProfileVP9Profile2},
       // VaapiWrapper does not support Profile 3.
       //{VP9PROFILE_PROFILE3, VAProfileVP9Profile3},
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
           // TODO(hiroh): Remove if-macro once libva for linux-chrome is upreved
           // to 2.9.0 or newer.
           // https://source.chromium.org/chromium/chromium/src/+/master:build/linux/sysroot_scripts/generated_package_lists/sid.amd64
@@ -2260,7 +2261,7 @@
   static bool result = InitializeStubs(paths);
   if (!result) {
     static const char kErrorMsg[] = "Failed to initialize VAAPI libs";
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
     // When Chrome runs on Linux with target_os="chromeos", do not log error
     // message without VAAPI libraries.
     LOG_IF(ERROR, base::SysInfo::IsRunningOnChromeOS()) << kErrorMsg;

diff --git a/media/gpu/video_encode_accelerator_unittest.cc b/media/gpu/video_encode_accelerator_unittest.cc
index 8b9f416..f868e54 100644
--- a/media/gpu/video_encode_accelerator_unittest.cc
+++ b/media/gpu/video_encode_accelerator_unittest.cc

@@ -44,6 +44,7 @@
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "gpu/config/gpu_driver_bug_workarounds.h"
 #include "gpu/config/gpu_preferences.h"
 #include "gpu/ipc/service/gpu_memory_buffer_factory.h"
@@ -313,7 +314,7 @@
   return profile >= VP9PROFILE_MIN && profile <= VP9PROFILE_MAX;
 }
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
 // Determine the test is known-to-fail and should be skipped.
 bool ShouldSkipTest(VideoPixelFormat format) {
   struct Pattern {
@@ -361,7 +362,7 @@
 
   return false;
 }
-#endif  // defined(OS_CHROMEOS)
+#endif  // BUILDFLAG(IS_ASH)
 
 // Helper functions to do string conversions.
 static base::FilePath::StringType StringToFilePathStringType(
@@ -2792,10 +2793,10 @@
   const bool force_level = std::get<8>(GetParam());
   const bool scale = std::get<9>(GetParam());
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
   if (ShouldSkipTest(g_env->test_streams_[0]->pixel_format))
     GTEST_SKIP();
-#endif  // defined(OS_CHROMEOS)
+#endif  // BUILDFLAG(IS_ASH)
 
   if (force_level) {
     // Skip ForceLevel test if "--force_level=false".
@@ -2927,10 +2928,10 @@
   const int test_type = GetParam();
   ASSERT_LT(test_type, 2) << "Invalid test type=" << test_type;
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
   if (ShouldSkipTest(g_env->test_streams_[0]->pixel_format))
     GTEST_SKIP();
-#endif  // defined(OS_CHROMEOS)
+#endif  // BUILDFLAG(IS_ASH)
 
   if (test_type == 0)
     SimpleTestFunc<VEANoInputClient>();
@@ -3184,7 +3185,7 @@
   void Initialize() override {
     base::TestSuite::Initialize();
 
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
     task_environment_ = std::make_unique<base::test::TaskEnvironment>(
         base::test::TaskEnvironment::MainThreadType::UI);
 #else
@@ -3276,7 +3277,7 @@
     }
 
     if (it->first == "native_input") {
-#if defined(OS_CHROMEOS)
+#if BUILDFLAG(IS_ASH)
       media::g_native_input = true;
 #else
       LOG(FATAL) << "Unsupported option";

diff --git a/media/gpu/vp9_decoder.cc b/media/gpu/vp9_decoder.cc
index a36e204..29cd176 100644
--- a/media/gpu/vp9_decoder.cc
+++ b/media/gpu/vp9_decoder.cc

@@ -10,6 +10,7 @@
 #include "base/feature_list.h"
 #include "base/logging.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "media/base/limits.h"
 #include "media/base/media_switches.h"
 #include "media/gpu/vp9_decoder.h"
@@ -19,7 +20,7 @@
 namespace {
 std::vector<uint32_t> GetSpatialLayerFrameSize(
     const DecoderBuffer& decoder_buffer) {
-#if defined(ARCH_CPU_X86_FAMILY) && defined(OS_CHROMEOS)
+#if defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_ASH)
   const uint32_t* cue_data =
       reinterpret_cast<const uint32_t*>(decoder_buffer.side_data());
   if (!cue_data) {
@@ -36,7 +37,7 @@
     return {};
   }
   return std::vector<uint32_t>(cue_data, cue_data + num_of_layers);
-#endif  // defined(ARCH_CPU_X86_FAMILY) && defined(OS_CHROMEOS)
+#endif  // defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_ASH)
   return {};
 }