Implement GpuArcVideoService for arc video accelerator

content/common/gpu/gpu_channel.cc

Index: content/common/gpu/gpu_channel.cc
diff --git a/content/common/gpu/gpu_channel.cc b/content/common/gpu/gpu_channel.cc
index f8559b9ff9e716dfbb419155b549a7662f076dec..69a8dfa385afb051d208ee5e674ce0dc19645e1e 100644
--- a/content/common/gpu/gpu_channel.cc
+++ b/content/common/gpu/gpu_channel.cc
@@ -30,6 +30,7 @@
 #include "content/common/gpu/gpu_channel_manager.h"
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "content/common/gpu/gpu_messages.h"
+#include "content/common/gpu/media/gpu_arc_accelerator.h"
 #include "content/common/gpu/media/gpu_jpeg_decode_accelerator.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/command_buffer/common/mailbox.h"
@@ -618,6 +619,10 @@ IPC::ChannelHandle GpuChannel::Init(base::WaitableEvent* shutdown_event) {
 
   channel_->AddFilter(filter_.get());
 
+  arc_accelerator_.reset(
+      new GpuArcAccelerator(this, shutdown_event, io_task_runner_));
+  arc_accelerator_->Initialize();
+
   return channel_handle;
 }
 
@@ -789,6 +794,9 @@ bool GpuChannel::OnControlMessageReceived(const IPC::Message& msg) {
                         OnDestroyCommandBuffer)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuMsg_CreateJpegDecoder,
                                     OnCreateJpegDecoder)
+    IPC_MESSAGE_HANDLER(GpuMsg_CreateArcAccelerator, OnCreateArcAccelerator)
+    IPC_MESSAGE_HANDLER(GpuMsg_ShutdownArcAccelerators,
+                        OnShutdownArcAccelerators)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   DCHECK(handled) << msg.type();
@@ -1000,6 +1008,15 @@ void GpuChannel::OnCreateJpegDecoder(int32 route_id, IPC::Message* reply_msg) {
   jpeg_decoder_->AddClient(route_id, reply_msg);
 }
 
+void GpuChannel::OnCreateArcAccelerator(uint32_t device_type) {
+  DCHECK(arc_accelerator_);
+  arc_accelerator_->CreateClient(device_type);
+}
+
+void GpuChannel::OnShutdownArcAccelerators() {
+  arc_accelerator_.reset();
+}
+
 void GpuChannel::CacheShader(const std::string& key,
                              const std::string& shader) {
   gpu_channel_manager_->Send(