Replace MessageLoopProxy with SingleThreadTaskRunner for media/filters/ + associated code.

media/filters/decrypting_video_decoder.cc

Index: media/filters/decrypting_video_decoder.cc
diff --git a/media/filters/decrypting_video_decoder.cc b/media/filters/decrypting_video_decoder.cc
index cb94c8ca75842dc2a13fa137ff3b59b7c4c07cb6..807a41ecc4ed5b30c02aa6e3404010f7399d9ebf 100644
--- a/media/filters/decrypting_video_decoder.cc
+++ b/media/filters/decrypting_video_decoder.cc
@@ -9,7 +9,7 @@
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
+#include "base/single_thread_task_runner.h"
 #include "media/base/bind_to_loop.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/decryptor.h"
@@ -20,9 +20,9 @@
 namespace media {
 
 DecryptingVideoDecoder::DecryptingVideoDecoder(
-    const scoped_refptr<base::MessageLoopProxy>& message_loop,
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
     const SetDecryptorReadyCB& set_decryptor_ready_cb)
-    : message_loop_(message_loop),
+    : task_runner_(task_runner),
       weak_factory_(this),
       state_(kUninitialized),
       set_decryptor_ready_cb_(set_decryptor_ready_cb),
@@ -34,7 +34,7 @@ DecryptingVideoDecoder::DecryptingVideoDecoder(
 void DecryptingVideoDecoder::Initialize(const VideoDecoderConfig& config,
                                         const PipelineStatusCB& status_cb) {
   DVLOG(2) << "Initialize()";
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ == kUninitialized ||
          state_ == kIdle ||
          state_ == kDecodeFinished) << state_;
@@ -64,7 +64,7 @@ void DecryptingVideoDecoder::Initialize(const VideoDecoderConfig& config,
 void DecryptingVideoDecoder::Decode(const scoped_refptr<DecoderBuffer>& buffer,
                                     const DecodeCB& decode_cb) {
   DVLOG(3) << "Decode()";
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ == kIdle ||
          state_ == kDecodeFinished ||
          state_ == kError) << state_;
@@ -91,7 +91,7 @@ void DecryptingVideoDecoder::Decode(const scoped_refptr<DecoderBuffer>& buffer,
 
 void DecryptingVideoDecoder::Reset(const base::Closure& closure) {
   DVLOG(2) << "Reset() - state: " << state_;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ == kIdle ||
          state_ == kPendingDecode ||
          state_ == kWaitingForKey ||
@@ -124,7 +124,7 @@ void DecryptingVideoDecoder::Reset(const base::Closure& closure) {
 }
 
 void DecryptingVideoDecoder::Stop(const base::Closure& closure) {
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DVLOG(2) << "Stop() - state: " << state_;
 
   // At this point the render thread is likely paused (in WebMediaPlayerImpl's
@@ -155,7 +155,7 @@ DecryptingVideoDecoder::~DecryptingVideoDecoder() {
 
 void DecryptingVideoDecoder::SetDecryptor(Decryptor* decryptor) {
   DVLOG(2) << "SetDecryptor()";
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
 
   if (state_ == kStopped)
     return;
@@ -182,7 +182,7 @@ void DecryptingVideoDecoder::SetDecryptor(Decryptor* decryptor) {
 
 void DecryptingVideoDecoder::FinishInitialization(bool success) {
   DVLOG(2) << "FinishInitialization()";
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
 
   if (state_ == kStopped)
     return;
@@ -208,7 +208,7 @@ void DecryptingVideoDecoder::FinishInitialization(bool success) {
 
 
 void DecryptingVideoDecoder::DecodePendingBuffer() {
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kPendingDecode) << state_;
   TRACE_EVENT_ASYNC_BEGIN0(
       "eme", "DecryptingVideoDecoder::DecodePendingBuffer", ++trace_id_);
@@ -228,7 +228,7 @@ void DecryptingVideoDecoder::DeliverFrame(
     Decryptor::Status status,
     const scoped_refptr<VideoFrame>& frame) {
   DVLOG(3) << "DeliverFrame() - status: " << status;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   TRACE_EVENT_ASYNC_END0(
       "eme", "DecryptingVideoDecoder::DecodePendingBuffer", trace_id_);
 
@@ -300,7 +300,7 @@ void DecryptingVideoDecoder::DeliverFrame(
 
 void DecryptingVideoDecoder::OnKeyAdded() {
   DVLOG(2) << "OnKeyAdded()";
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
 
   if (state_ == kPendingDecode) {
     key_added_while_decode_pending_ = true;