Add WebThread in AudioDestination to support AudioWorkletThread

third_party/WebKit/Source/platform/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 2143 matching lines @@
     "graphics/ImageDecodingStoreTest.cpp",
     "graphics/ImageFrameGeneratorTest.cpp",
     "graphics/ImageLayerChromiumTest.cpp",
     "graphics/gpu/DrawingBufferSoftwareRenderingTest.cpp",
     "graphics/test/FakeGLES2Interface.h",
     "graphics/test/FakeWebGraphicsContext3DProvider.h",
     "graphics/test/MockImageDecoder.h",
 
     # TODO(toyoshim): Remove Platform dependency and move to loader/BUILD.gn
     "loader/fetch/ResourceResponseTest.cpp",
+
+    # TODO(hongchan): Remove Platform dependency and move to audio/BUILD.gn
+    "audio/PushPullFIFOSmokeTest.cpp",

[hongchan, 2017/04/20 18:01:37]

To be able to spawn a thread from Platform::Current(), this change is necessary.

[haraken, 2017/04/20 20:20:51]

Would you help me understand the problem? platform/audio/ should be able to use
Platform::Current(). What's an issue of moving it to audio/BUILD.gn?

[hongchan, 2017/04/20 20:35:09]

With the blink_platform_unittests, Platform::Current()->CreateThread() returns
nullptr. Thus all the thread operations makes the test crash.

   ]
 
   configs += [
     ":blink_platform_pch",
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }