MessageLoopProxy cleanups in remoting client.

remoting/client/plugin/pepper_view.cc

Index: remoting/client/plugin/pepper_view.cc
diff --git a/remoting/client/plugin/pepper_view.cc b/remoting/client/plugin/pepper_view.cc
index 531ff6ca29a94e45305d5f136f5a962d913ea2cc..35976e4efe2babacad8b22a0869d5cdc7030c10a 100644
--- a/remoting/client/plugin/pepper_view.cc
+++ b/remoting/client/plugin/pepper_view.cc
@@ -96,7 +96,7 @@ bool PepperView::Initialize() {
 }
 
 void PepperView::TearDown() {
-  DCHECK(context_->main_message_loop()->BelongsToCurrentThread());
+  DCHECK(context_->main_task_runner()->BelongsToCurrentThread());
   DCHECK(is_initialized_);
 
   is_initialized_ = false;
@@ -117,7 +117,7 @@ void PepperView::TearDown() {
 
 void PepperView::SetConnectionState(protocol::ConnectionToHost::State state,
                                     protocol::ErrorCode error) {
-  DCHECK(context_->main_message_loop()->BelongsToCurrentThread());
+  DCHECK(context_->main_task_runner()->BelongsToCurrentThread());
 
   switch (state) {
     case protocol::ConnectionToHost::CONNECTING:
@@ -188,7 +188,7 @@ void PepperView::ApplyBuffer(const SkISize& view_size,
                              const SkIRect& clip_area,
                              pp::ImageData* buffer,
                              const SkRegion& region) {
-  DCHECK(context_->main_message_loop()->BelongsToCurrentThread());
+  DCHECK(context_->main_task_runner()->BelongsToCurrentThread());
 
   if (!frame_received_) {
     instance_->OnFirstFrameReceived();
@@ -208,7 +208,7 @@ void PepperView::ApplyBuffer(const SkISize& view_size,
 }
 
 void PepperView::ReturnBuffer(pp::ImageData* buffer) {
-  DCHECK(context_->main_message_loop()->BelongsToCurrentThread());
+  DCHECK(context_->main_task_runner()->BelongsToCurrentThread());
 
   // Free the buffer if there is nothing to paint.
   if (!is_initialized_) {
@@ -228,7 +228,7 @@ void PepperView::ReturnBuffer(pp::ImageData* buffer) {
 }
 
 void PepperView::SetSourceSize(const SkISize& source_size) {
-  DCHECK(context_->main_message_loop()->BelongsToCurrentThread());
+  DCHECK(context_->main_task_runner()->BelongsToCurrentThread());
 
   if (source_size_ == source_size)
     return;
@@ -337,7 +337,7 @@ void PepperView::FlushBuffer(const SkIRect& clip_area,
 void PepperView::OnFlushDone(base::Time paint_start,
                              pp::ImageData* buffer,
                              int result) {
-  DCHECK(context_->main_message_loop()->BelongsToCurrentThread());
+  DCHECK(context_->main_task_runner()->BelongsToCurrentThread());
   DCHECK(flush_pending_);
 
   instance_->GetStats()->video_paint_ms()->Record(