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

content/common/gpu/gpu_channel_manager.cc

Index: content/common/gpu/gpu_channel_manager.cc
diff --git a/content/common/gpu/gpu_channel_manager.cc b/content/common/gpu/gpu_channel_manager.cc
index 4cec7cb3c8114656a0138f24c144935a56bebb1f..cb26cf21072daac96c32490d20a777aed2f8e494 100644
--- a/content/common/gpu/gpu_channel_manager.cc
+++ b/content/common/gpu/gpu_channel_manager.cc
@@ -6,9 +6,6 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
-#include "base/location.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "content/common/gpu/gpu_memory_manager.h"
@@ -88,13 +85,12 @@
 
 }  // namespace
 
-GpuChannelManager::GpuChannelManager(
-    MessageRouter* router,
-    GpuWatchdog* watchdog,
-    base::SingleThreadTaskRunner* io_task_runner,
-    base::WaitableEvent* shutdown_event,
-    IPC::SyncChannel* channel)
-    : io_task_runner_(io_task_runner),
+GpuChannelManager::GpuChannelManager(MessageRouter* router,
+                                     GpuWatchdog* watchdog,
+                                     base::MessageLoopProxy* io_message_loop,
+                                     base::WaitableEvent* shutdown_event,
+                                     IPC::SyncChannel* channel)
+    : io_message_loop_(io_message_loop),
       shutdown_event_(shutdown_event),
       router_(router),
       gpu_memory_manager_(
@@ -110,7 +106,7 @@
       relinquish_resources_pending_(false),
       weak_factory_(this) {
   DCHECK(router_);
-  DCHECK(io_task_runner);
+  DCHECK(io_message_loop);
   DCHECK(shutdown_event);
   channel_->AddFilter(filter_.get());
 }
@@ -210,7 +206,7 @@
                                                 client_id,
                                                 false,
                                                 allow_future_sync_points));
-  channel->Init(io_task_runner_.get(), shutdown_event_);
+  channel->Init(io_message_loop_.get(), shutdown_event_);
   channel_handle.name = channel->GetChannelName();
 
 #if defined(OS_POSIX)
@@ -259,9 +255,12 @@
 void GpuChannelManager::DestroyGpuMemoryBuffer(
     gfx::GpuMemoryBufferId id,
     int client_id) {
-  io_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&GpuChannelManager::DestroyGpuMemoryBufferOnIO,
-                            base::Unretained(this), id, client_id));
+  io_message_loop_->PostTask(
+      FROM_HERE,
+      base::Bind(&GpuChannelManager::DestroyGpuMemoryBufferOnIO,
+                 base::Unretained(this),
+                 id,
+                 client_id));
 }
 
 void GpuChannelManager::DestroyGpuMemoryBufferOnIO(
@@ -325,9 +324,10 @@
        iter != gpu_channels_.end(); ++iter) {
     iter->second->MarkAllContextsLost();
   }
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE, base::Bind(&GpuChannelManager::OnLoseAllContexts,
-                            weak_factory_.GetWeakPtr()));
+  base::MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&GpuChannelManager::OnLoseAllContexts,
+                 weak_factory_.GetWeakPtr()));
 }
 
 void GpuChannelManager::OnLoseAllContexts() {