Revert "Implement GpuArcVideoService for arc video accelerator"

content/common/gpu/gpu_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 815 matching lines @@
 IPC_MESSAGE_ROUTED0(AcceleratedJpegDecoderMsg_Destroy)
 
 //------------------------------------------------------------------------------
 // Accelerated JPEG Decoder Host Messages
 // These messages are sent from the GPU process to Browser process.
 //
 // Report decode status.
 IPC_MESSAGE_ROUTED2(AcceleratedJpegDecoderHostMsg_DecodeAck,
                     int32_t, /* bitstream_buffer_id */
                     media::JpegDecodeAccelerator::Error /* error */)
-
-#if defined(OS_CHROMEOS)
-//------------------------------------------------------------------------------
-// Arc Video Accelerator Messages
-// These messages are sent from the Browser process to GPU process.
-
-// Tells the GPU process to create a new channel for communication with
-// ArcVideoAccelerator. The channel is returned using
-// GpuHostMsg_ArcVideoAcceleratorChannelCreated message.
-IPC_MESSAGE_CONTROL0(GpuMsg_CreateArcVideoAcceleratorChannel)
-
-// Tells the GPU process to shutdown arc video service and terminate all
-// instances of ArcVideoAccelerator.
-IPC_MESSAGE_CONTROL0(GpuMsg_ShutdownArcVideoService)
-
-//------------------------------------------------------------------------------
-// Arc Video Accelerator Host Messages
-// These messages are sent from the GPU process to Browser process.
-
-// Response from GPU to a GpuMsg_CreateArcVideoAcceleratorChannel message.
-IPC_MESSAGE_CONTROL1(GpuHostMsg_ArcVideoAcceleratorChannelCreated,
-                     IPC::ChannelHandle /* handle to channel */)
-#endif