Avoid GpuPreferences exposed in content public gpu interface

content/public/gpu/gpu_video_decode_accelerator_factory.cc

Index: content/public/gpu/gpu_video_decode_accelerator_factory.cc
diff --git a/content/public/gpu/gpu_video_decode_accelerator_factory.cc b/content/public/gpu/gpu_video_decode_accelerator_factory.cc
index 57b46a86f10ae50e182fcc7dd1e7744deabe40dd..d4f3bf8d991679e3a107ffba69c11d856418f84f 100644
--- a/content/public/gpu/gpu_video_decode_accelerator_factory.cc
+++ b/content/public/gpu/gpu_video_decode_accelerator_factory.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "content/common/gpu/media/gpu_video_decode_accelerator_factory_impl.h"
+#include "content/gpu/gpu_child_thread.h"

[jam, 2016/04/08 16:16:25]

nit: add blank line before

[kcwu, 2016/04/08 16:39:44]

Done.
Move the corresponding header of this file to first.

 #include "content/public/gpu/gpu_video_decode_accelerator_factory.h"
 
 namespace content {
@@ -44,8 +45,9 @@ GpuVideoDecodeAcceleratorFactory::CreateWithGLES2Decoder(
 
 // static
 gpu::VideoDecodeAcceleratorCapabilities
-GpuVideoDecodeAcceleratorFactory::GetDecoderCapabilities(
-    const gpu::GpuPreferences& gpu_preferences) {
+GpuVideoDecodeAcceleratorFactory::GetDecoderCapabilities() {
+  const gpu::GpuPreferences gpu_preferences =
+      GpuChildThread::current()->gpu_preferences();
   return GpuVideoDecodeAcceleratorFactoryImpl::GetDecoderCapabilities(
       gpu_preferences);
 }
@@ -53,11 +55,12 @@ GpuVideoDecodeAcceleratorFactory::GetDecoderCapabilities(
 scoped_ptr<media::VideoDecodeAccelerator>
 GpuVideoDecodeAcceleratorFactory::CreateVDA(
     media::VideoDecodeAccelerator::Client* client,
-    const media::VideoDecodeAccelerator::Config& config,
-    const gpu::GpuPreferences& gpu_preferences) {
+    const media::VideoDecodeAccelerator::Config& config) {
   if (!gvdafactory_impl_)
     return nullptr;
 
+  const gpu::GpuPreferences gpu_preferences =
+      GpuChildThread::current()->gpu_preferences();
   return gvdafactory_impl_->CreateVDA(client, config, gpu_preferences);
 }