Remove unneeded thread.h includes and fix IWUU.

Include removed from trace_event_impl.h and leveldb_mojo_proxy.h

Removing unnecessary thread.h includes allows including trace_event_impl.h
in pending_task.h without introducing a cyclic dependency
(in a follow-up CL).

BUG=649084
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

TBR=wez,pastarmovj,rockot,sadrul (ref. https://codereview.chromium.org/2365623003/#msg68)

Review-Url: https://codereview.chromium.org/2365623003
Cr-Commit-Position: refs/heads/master@{#420989}

diff --git a/base/threading/sequenced_worker_pool.cc b/base/threading/sequenced_worker_pool.cc
index 01f33295..2c970ea5 100644
--- a/base/threading/sequenced_worker_pool.cc
+++ b/base/threading/sequenced_worker_pool.cc

@@ -38,6 +38,7 @@
 #include "base/trace_event/heap_profiler.h"
 #include "base/trace_event/trace_event.h"
 #include "base/tracked_objects.h"
+#include "base/tracking_info.h"
 #include "build/build_config.h"
 
 #if defined(OS_MACOSX)

diff --git a/base/trace_event/trace_event_android.cc b/base/trace_event/trace_event_android.cc
index a28c54a..0a4e6ea 100644
--- a/base/trace_event/trace_event_android.cc
+++ b/base/trace_event/trace_event_android.cc

@@ -13,6 +13,7 @@
 #include "base/posix/eintr_wrapper.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/threading/thread.h"
 #include "base/trace_event/trace_event.h"
 
 namespace base {

diff --git a/base/trace_event/trace_event_impl.h b/base/trace_event/trace_event_impl.h
index 43822178..0b23d31 100644
--- a/base/trace_event/trace_event_impl.h
+++ b/base/trace_event/trace_event_impl.h

@@ -23,7 +23,6 @@
 #include "base/strings/string_util.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
-#include "base/threading/thread.h"
 #include "base/threading/thread_local.h"
 #include "base/trace_event/trace_event_memory_overhead.h"
 #include "build/build_config.h"

diff --git a/base/trace_event/trace_log.cc b/base/trace_event/trace_log.cc
index 866111a..9f0b50d4 100644
--- a/base/trace_event/trace_log.cc
+++ b/base/trace_event/trace_log.cc

@@ -19,6 +19,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/singleton.h"
+#include "base/message_loop/message_loop.h"
 #include "base/process/process_metrics.h"
 #include "base/stl_util.h"
 #include "base/strings/string_split.h"

diff --git a/blimp/client/core/compositor/blimp_compositor_frame_sink_unittest.cc b/blimp/client/core/compositor/blimp_compositor_frame_sink_unittest.cc
index ce99811..02b5afed 100644
--- a/blimp/client/core/compositor/blimp_compositor_frame_sink_unittest.cc
+++ b/blimp/client/core/compositor/blimp_compositor_frame_sink_unittest.cc

@@ -8,6 +8,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/test/fake_compositor_frame_sink_client.h"

diff --git a/blimp/client/core/compositor/blimp_compositor_unittest.cc b/blimp/client/core/compositor/blimp_compositor_unittest.cc
index 0de2012..13825045 100644
--- a/blimp/client/core/compositor/blimp_compositor_unittest.cc
+++ b/blimp/client/core/compositor/blimp_compositor_unittest.cc

@@ -4,6 +4,7 @@
 
 #include "blimp/client/core/compositor/blimp_compositor.h"
 
+#include "base/message_loop/message_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "blimp/client/core/compositor/blimp_compositor_dependencies.h"
 #include "blimp/client/core/compositor/blob_image_serialization_processor.h"

diff --git a/cc/raster/raster_buffer_provider_unittest.cc b/cc/raster/raster_buffer_provider_unittest.cc
index 0c18dde..3b8668d 100644
--- a/cc/raster/raster_buffer_provider_unittest.cc
+++ b/cc/raster/raster_buffer_provider_unittest.cc

@@ -15,6 +15,7 @@
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/base/unique_notifier.h"

diff --git a/cc/test/fake_external_begin_frame_source.h b/cc/test/fake_external_begin_frame_source.h
index 7c03edb8..8f2d4f09 100644
--- a/cc/test/fake_external_begin_frame_source.h
+++ b/cc/test/fake_external_begin_frame_source.h

@@ -9,6 +9,7 @@
 
 #include "base/cancelable_callback.h"
 #include "base/memory/weak_ptr.h"
+#include "base/threading/non_thread_safe.h"
 #include "cc/scheduler/begin_frame_source.h"
 
 namespace cc {

diff --git a/cc/tiles/picture_layer_tiling_set.h b/cc/tiles/picture_layer_tiling_set.h
index 9fcb1b7..20e7a76e 100644
--- a/cc/tiles/picture_layer_tiling_set.h
+++ b/cc/tiles/picture_layer_tiling_set.h

@@ -7,6 +7,7 @@
 
 #include <stddef.h>
 
+#include <list>
 #include <set>
 #include <vector>
 

diff --git a/cc/trees/remote_channel_impl.h b/cc/trees/remote_channel_impl.h
index ae08a17..f77a53e 100644
--- a/cc/trees/remote_channel_impl.h
+++ b/cc/trees/remote_channel_impl.h

@@ -5,6 +5,8 @@
 #ifndef CC_TREES_REMOTE_CHANNEL_IMPL_H_
 #define CC_TREES_REMOTE_CHANNEL_IMPL_H_
 
+#include <queue>
+
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "cc/base/cc_export.h"

diff --git a/chrome/browser/safe_browsing/protocol_manager_unittest.cc b/chrome/browser/safe_browsing/protocol_manager_unittest.cc
index 452b801..a07df56a 100644
--- a/chrome/browser/safe_browsing/protocol_manager_unittest.cc
+++ b/chrome/browser/safe_browsing/protocol_manager_unittest.cc

@@ -7,6 +7,7 @@
 #include <memory>
 #include <vector>
 
+#include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"

diff --git a/components/leveldb/leveldb_mojo_proxy.cc b/components/leveldb/leveldb_mojo_proxy.cc
index 96f2853e..b25fb60 100644
--- a/components/leveldb/leveldb_mojo_proxy.cc
+++ b/components/leveldb/leveldb_mojo_proxy.cc

@@ -8,6 +8,7 @@
 
 #include "base/bind.h"
 #include "base/callback.h"
+#include "base/single_thread_task_runner.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/system/platform_handle.h"
 

diff --git a/components/leveldb/leveldb_mojo_proxy.h b/components/leveldb/leveldb_mojo_proxy.h
index 881e8b7..2eef1a4 100644
--- a/components/leveldb/leveldb_mojo_proxy.h
+++ b/components/leveldb/leveldb_mojo_proxy.h

@@ -15,9 +15,12 @@
 #include "base/files/file.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/waitable_event.h"
-#include "base/threading/thread.h"
 #include "components/filesystem/public/interfaces/directory.mojom.h"
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace leveldb {
 
 // A proxy for thread safe access to Mojo objects from multiple threads.

diff --git a/components/policy/core/common/cloud/policy_header_io_helper_unittest.cc b/components/policy/core/common/cloud/policy_header_io_helper_unittest.cc
index 2b51273..ee504f3ca 100644
--- a/components/policy/core/common/cloud/policy_header_io_helper_unittest.cc
+++ b/components/policy/core/common/cloud/policy_header_io_helper_unittest.cc

@@ -7,6 +7,7 @@
 #include <memory>
 
 #include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
 #include "base/test/test_simple_task_runner.h"
 #include "net/http/http_request_headers.h"
 #include "net/url_request/url_request.h"

diff --git a/components/policy/core/common/cloud/policy_header_service_unittest.cc b/components/policy/core/common/cloud/policy_header_service_unittest.cc
index 423859f..8d8cc4c 100644
--- a/components/policy/core/common/cloud/policy_header_service_unittest.cc
+++ b/components/policy/core/common/cloud/policy_header_service_unittest.cc

@@ -9,6 +9,7 @@
 
 #include "base/base64.h"
 #include "base/json/json_reader.h"
+#include "base/message_loop/message_loop.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/values.h"
 #include "components/policy/core/common/cloud/cloud_policy_constants.h"

diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index 9d6ee093..d42c354 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h

@@ -34,6 +34,10 @@
 
 struct GPUCreateCommandBufferConfig;
 
+namespace base {
+class Thread;
+}
+
 namespace IPC {
 struct ChannelHandle;
 }

diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index 29b8c8a1a..abc660a 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc

@@ -6,6 +6,7 @@
 
 #include <errno.h>
 #include <string.h>
+
 #include <map>
 #include <utility>
 

diff --git a/content/browser/renderer_host/render_message_filter.h b/content/browser/renderer_host/render_message_filter.h
index cb059451..1bec995 100644
--- a/content/browser/renderer_host/render_message_filter.h
+++ b/content/browser/renderer_host/render_message_filter.h

@@ -8,6 +8,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <list>
 #include <string>
 #include <vector>
 

diff --git a/content/browser/tracing/background_tracing_config_unittest.cc b/content/browser/tracing/background_tracing_config_unittest.cc
index 3aeedd9..aae2971 100644
--- a/content/browser/tracing/background_tracing_config_unittest.cc
+++ b/content/browser/tracing/background_tracing_config_unittest.cc

@@ -6,6 +6,7 @@
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
+#include "base/message_loop/message_loop.h"
 #include "base/values.h"
 #include "content/browser/tracing/background_tracing_config_impl.h"
 #include "content/browser/tracing/background_tracing_rule.h"

diff --git a/content/renderer/media/audio_renderer_sink_cache_unittest.cc b/content/renderer/media/audio_renderer_sink_cache_unittest.cc
index 81e349c..614d639b 100644
--- a/content/renderer/media/audio_renderer_sink_cache_unittest.cc
+++ b/content/renderer/media/audio_renderer_sink_cache_unittest.cc

@@ -9,6 +9,7 @@
 #include "base/logging.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/test/test_timeouts.h"
+#include "base/threading/thread.h"
 #include "content/renderer/media/audio_renderer_sink_cache_impl.h"
 #include "media/audio/audio_device_description.h"
 #include "media/base/audio_parameters.h"

diff --git a/extensions/browser/api/display_source/display_source_apitestbase.cc b/extensions/browser/api/display_source/display_source_apitestbase.cc
index ee7ae1fd..b51afbc1 100644
--- a/extensions/browser/api/display_source/display_source_apitestbase.cc
+++ b/extensions/browser/api/display_source/display_source_apitestbase.cc

@@ -4,6 +4,7 @@
 
 #include "extensions/browser/api/display_source/display_source_apitestbase.h"
 
+#include <list>
 #include <map>
 #include <utility>
 

diff --git a/ipc/attachment_broker_mac_unittest.cc b/ipc/attachment_broker_mac_unittest.cc
index 8c40f0c..76c424a 100644
--- a/ipc/attachment_broker_mac_unittest.cc
+++ b/ipc/attachment_broker_mac_unittest.cc

@@ -23,6 +23,7 @@
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/spin_wait.h"
+#include "base/threading/thread.h"
 #include "base/time/time.h"
 #include "ipc/attachment_broker_messages.h"
 #include "ipc/attachment_broker_privileged_mac.h"

diff --git a/ipc/ipc_send_fds_test.cc b/ipc/ipc_send_fds_test.cc
index 94a5a71..f92b119a 100644
--- a/ipc/ipc_send_fds_test.cc
+++ b/ipc/ipc_send_fds_test.cc

@@ -27,6 +27,7 @@
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "ipc/ipc_message_attachment_set.h"
 #include "ipc/ipc_message_utils.h"

diff --git a/ipc/ipc_test_channel_listener.cc b/ipc/ipc_test_channel_listener.cc
index 4d25ca3..a755b42 100644
--- a/ipc/ipc_test_channel_listener.cc
+++ b/ipc/ipc_test_channel_listener.cc

@@ -4,6 +4,7 @@
 
 #include "ipc/ipc_test_channel_listener.h"
 
+#include "base/message_loop/message_loop.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_sender.h"
 #include "testing/gtest/include/gtest/gtest.h"

diff --git a/media/cast/test/end2end_unittest.cc b/media/cast/test/end2end_unittest.cc
index 287ef8d..06b40a59 100644
--- a/media/cast/test/end2end_unittest.cc
+++ b/media/cast/test/end2end_unittest.cc

@@ -22,6 +22,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/sys_byteorder.h"
 #include "base/test/simple_test_tick_clock.h"

diff --git a/media/gpu/android_video_decode_accelerator.cc b/media/gpu/android_video_decode_accelerator.cc
index fda7952..1b191ba 100644
--- a/media/gpu/android_video_decode_accelerator.cc
+++ b/media/gpu/android_video_decode_accelerator.cc

@@ -20,6 +20,7 @@
 #include "base/metrics/histogram.h"
 #include "base/sys_info.h"
 #include "base/task_runner_util.h"
+#include "base/threading/thread.h"
 #include "base/threading/thread_checker.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"

diff --git a/third_party/WebKit/Source/web/tests/DEPS b/third_party/WebKit/Source/web/tests/DEPS
index 47f1592..6523a0c 100644
--- a/third_party/WebKit/Source/web/tests/DEPS
+++ b/third_party/WebKit/Source/web/tests/DEPS

@@ -1,16 +1,11 @@
 include_rules = [
+    "+base",
     "+mojo/public/cpp/bindings",
     "+web/tests",
 ]
 
 specific_include_rules = {
     'RunAllTests\.cpp': [
-        "+base/bind.h",
-        "+base/bind_helpers.h",
-        "+base/run_loop.h",
-        "+base/test/launcher/unit_test_launcher.h",
-        "+base/test/test_suite.h",
-        "+base/threading/thread_task_runner_handle.h",
         "+content/test/blink_test_environment.h",
         "+mojo/edk/embedder/embedder.h",
     ],

diff --git a/third_party/WebKit/Source/web/tests/TimerPerfTest.cpp b/third_party/WebKit/Source/web/tests/TimerPerfTest.cpp
index 6babcbf..7187202 100644
--- a/third_party/WebKit/Source/web/tests/TimerPerfTest.cpp
+++ b/third_party/WebKit/Source/web/tests/TimerPerfTest.cpp

@@ -5,6 +5,8 @@
 
 #include "platform/Timer.h"
 
+#include "base/message_loop/message_loop.h"
+#include "base/time/time.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "public/platform/Platform.h"
 #include "testing/gtest/include/gtest/gtest.h"

diff --git a/third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp b/third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp
index 41e6eef..76c8855 100644
--- a/third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp
+++ b/third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/message_loop/message_loop.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebViewScheduler.h"

diff --git a/ui/events/ozone/device/udev/device_manager_udev.cc b/ui/events/ozone/device/udev/device_manager_udev.cc
index b152a9b..47776dac 100644
--- a/ui/events/ozone/device/udev/device_manager_udev.cc
+++ b/ui/events/ozone/device/udev/device_manager_udev.cc

@@ -8,6 +8,7 @@
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "ui/events/ozone/device/device_event.h"

diff --git a/ui/gl/gl_context_cgl.cc b/ui/gl/gl_context_cgl.cc
index fb9eb78..8ad26899 100644
--- a/ui/gl/gl_context_cgl.cc
+++ b/ui/gl/gl_context_cgl.cc

@@ -12,6 +12,7 @@
 
 #include "base/location.h"
 #include "base/logging.h"
+#include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"

diff --git a/ui/ozone/public/ozone_gpu_test_helper.cc b/ui/ozone/public/ozone_gpu_test_helper.cc
index aba0309..c1347fcb 100644
--- a/ui/ozone/public/ozone_gpu_test_helper.cc
+++ b/ui/ozone/public/ozone_gpu_test_helper.cc

@@ -4,6 +4,7 @@
 
 #include "ui/ozone/public/ozone_gpu_test_helper.h"
 
+#include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_message.h"