Revert of content/common: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/common/gpu/media/fake_video_decode_accelerator.cc

 // 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.
 
 #include "content/common/gpu/media/fake_video_decode_accelerator.h"
 
 #include "base/bind.h"
 #include "base/location.h"
-#include "base/thread_task_runner_handle.h"
 #include "media/base/bitstream_buffer.h"
 #include "media/base/limits.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gl_surface_egl.h"
 #include "ui/gl/gl_surface_glx.h"
 
 namespace content {
 
 static const uint32 kDefaultTextureTarget = GL_TEXTURE_2D;
 // Must be at least 2 since the rendering helper will switch between textures
 // and if there is only one, it will wait for the next one that will never come.
 // Must also be an even number as otherwise there won't be the same amount of
 // white and black frames.
 static const unsigned int kNumBuffers = media::limits::kMaxVideoFrames +
     (media::limits::kMaxVideoFrames & 1u);
 
 FakeVideoDecodeAccelerator::FakeVideoDecodeAccelerator(
     gfx::GLContext* gl,
     gfx::Size size,
     const base::Callback<bool(void)>& make_context_current)
-    : child_task_runner_(base::ThreadTaskRunnerHandle::Get()),
+    : child_message_loop_proxy_(base::MessageLoopProxy::current()),
       client_(NULL),
       make_context_current_(make_context_current),
       gl_(gl),
       frame_buffer_size_(size),
       flushing_(false),
       weak_this_factory_(this) {
 }
 
 FakeVideoDecodeAccelerator::~FakeVideoDecodeAccelerator() {
 }
 
 bool FakeVideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile,
                                             Client* client) {
-  DCHECK(child_task_runner_->BelongsToCurrentThread());
+  DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
   if (profile == media::VIDEO_CODEC_PROFILE_UNKNOWN) {
     LOG(ERROR) << "unknown codec profile";
     return false;
   }
   // V4L2VideoDecodeAccelerator waits until first decode call to ask for buffers
   // This class asks for it on initialization instead.
   client_ = client;
   client_->ProvidePictureBuffers(kNumBuffers,
                                  frame_buffer_size_,
                                  kDefaultTextureTarget);
   return true;
 }
 
 void FakeVideoDecodeAccelerator::Decode(
     const media::BitstreamBuffer& bitstream_buffer) {
   int bitstream_buffer_id = bitstream_buffer.id();
   queued_bitstream_ids_.push(bitstream_buffer_id);
-  child_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
-                            weak_this_factory_.GetWeakPtr()));
+  child_message_loop_proxy_->PostTask(
+      FROM_HERE,
+      base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
+                 weak_this_factory_.GetWeakPtr()));
 }
 
 // Similar to UseOutputBitstreamBuffer for the encode accelerator.
 void FakeVideoDecodeAccelerator::AssignPictureBuffers(
     const std::vector<media::PictureBuffer>& buffers) {
   DCHECK(buffers.size() == kNumBuffers);
   DCHECK(!(buffers.size()%2));
 
   // Save buffers and mark all buffers as ready for use.
   scoped_ptr<uint8[]> white_data(
@@ skipping 23 matching lines @@
                  GL_RGBA,
                  GL_UNSIGNED_BYTE,
                  data);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glBindTexture(GL_TEXTURE_2D, 0);
     free_output_buffers_.push(buffers[index].id());
   }
-  child_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
-                            weak_this_factory_.GetWeakPtr()));
+  child_message_loop_proxy_->PostTask(
+      FROM_HERE,
+      base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
+                 weak_this_factory_.GetWeakPtr()));
 }
 
 void FakeVideoDecodeAccelerator::ReusePictureBuffer(int32 picture_buffer_id) {
   free_output_buffers_.push(picture_buffer_id);
-  child_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
-                            weak_this_factory_.GetWeakPtr()));
+  child_message_loop_proxy_->PostTask(
+      FROM_HERE,
+      base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
+                 weak_this_factory_.GetWeakPtr()));
 }
 
 void FakeVideoDecodeAccelerator::Flush() {
   flushing_ = true;
-  child_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
-                            weak_this_factory_.GetWeakPtr()));
+  child_message_loop_proxy_->PostTask(
+      FROM_HERE,
+      base::Bind(&FakeVideoDecodeAccelerator::DoPictureReady,
+                 weak_this_factory_.GetWeakPtr()));
 }
 
 void FakeVideoDecodeAccelerator::Reset() {
   while (!queued_bitstream_ids_.empty()) {
     client_->NotifyEndOfBitstreamBuffer(queued_bitstream_ids_.front());
     queued_bitstream_ids_.pop();
   }
   client_->NotifyResetDone();
 }
 
@@ skipping 29 matching lines @@
     // Bitstream no longer needed.
     client_->NotifyEndOfBitstreamBuffer(bitstream_id);
     if (flushing_ && queued_bitstream_ids_.empty()) {
       flushing_ = false;
       client_->NotifyFlushDone();
     }
   }
 }
 
 }  // namespace content