Don't build khronos_glcts_test on Android

It doesn't pass, so we shouldn't be compiling it

BUG=605551, 550667, 550665
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel

Review URL: https://codereview.chromium.org/1904083002

Cr-Commit-Position: refs/heads/master@{#388969}

diff --git a/BUILD.gn b/BUILD.gn
index 278f58d..d89ba2c 100644
--- a/BUILD.gn
+++ b/BUILD.gn

@@ -499,7 +499,6 @@
 
       # TODO(GYP): Remove this when the gles2 tests work
       "//gpu/command_buffer/client:gles2_implementation_no_check",
-      "//gpu/khronos_glcts_support:khronos_glcts_test",  # TODO(GYP) crbug.com/471903 to make this complete.
       "//mojo/edk/test:mojo_public_system_perftests",
       "//services/shell/public/cpp",
       "//testing/gmock:gmock_main",
@@ -510,6 +509,7 @@
       deps += [
         "//build/sanitizers:copy_llvm_symbolizer",
         "//chrome/test:chrome_app_unittests",
+        "//gpu/khronos_glcts_support:khronos_glcts_test",  # TODO(GYP) crbug.com/471903 to make this complete.
         "//media/cast:cast_benchmarks",
         "//media/cast:tap_proxy",
         "//skia:filter_fuzz_stub",