gpu: Use mus gpu interface in non-mus chrome.

content/common/gpu_host_messages.h

 // Copyright 2016 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 "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/common/establish_channel_params.h"
@@ skipping 88 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(enable_gpu_service_logging)
   IPC_STRUCT_TRAITS_MEMBER(enable_gpu_service_tracing)
   IPC_STRUCT_TRAITS_MEMBER(enable_es3_apis)
   IPC_STRUCT_TRAITS_MEMBER(use_passthrough_cmd_decoder)
 IPC_STRUCT_TRAITS_END()
 
 //------------------------------------------------------------------------------
 // GPU Messages
 // These are messages from the browser to the GPU process.
 
-// Tells the GPU process to initialize itself. The browser explicitly
-// requests this be done so that we are guaranteed that the channel is set
-// up between the browser and GPU process before doing any work that might
-// potentially crash the GPU process. Detection of the child process
-// exiting abruptly is predicated on having the IPC channel set up.
-IPC_MESSAGE_CONTROL1(GpuMsg_Initialize,
-                     gpu::GpuPreferences /* gpu_prefernces */)
-
 // Tells the GPU process to shutdown itself.
 IPC_MESSAGE_CONTROL0(GpuMsg_Finalize)
 
 // Tells the GPU process to create a new channel for communication with a
 // given client.  The channel name is returned in a
 // GpuHostMsg_ChannelEstablished message.  The client ID is passed so
 // that the GPU process reuses an existing channel to that process if it exists.
 // This ID is a unique opaque identifier generated by the browser process.
 // The client_tracing_id is a unique ID used for the purposes of tracing.
 IPC_MESSAGE_CONTROL1(GpuMsg_EstablishChannel,
@@ skipping 46 matching lines @@
 
 // Response from GPU to a GputMsg_Initialize message.
 IPC_MESSAGE_CONTROL2(GpuHostMsg_Initialized,
                      bool /* result */,
                      ::gpu::GPUInfo /* gpu_info */)
 
 // Response from GPU to a GpuHostMsg_EstablishChannel message.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_ChannelEstablished,
                      IPC::ChannelHandle /* channel_handle */)
 
-// Message from GPU to notify to destroy the channel.
-IPC_MESSAGE_CONTROL1(GpuHostMsg_DestroyChannel, int32_t /* client_id */)
-
-// Message to cache the given shader information.
-IPC_MESSAGE_CONTROL3(GpuHostMsg_CacheShader,
-                     int32_t /* client_id */,
-                     std::string /* key */,
-                     std::string /* shader */)
-
 // Message to the GPU that a shader was loaded from disk.
 IPC_MESSAGE_CONTROL1(GpuMsg_LoadedShader, std::string /* encoded shader */)
 
 // Response from GPU to a GpuMsg_CreateGpuMemoryBuffer message.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_GpuMemoryBufferCreated,
                      gfx::GpuMemoryBufferHandle /* handle */)
 
 // Response from GPU to a GpuMsg_CollectGraphicsInfo.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_GraphicsInfoCollected,
                      gpu::GPUInfo /* GPU logging stats */)
 
 // Response from GPU to a GpuMsg_GetVideoMemory.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_VideoMemoryUsageStats,
                      gpu::VideoMemoryUsageStats /* GPU memory stats */)
 
-#if defined(OS_WIN)
-IPC_MESSAGE_CONTROL2(GpuHostMsg_AcceleratedSurfaceCreatedChildWindow,
-                     gpu::SurfaceHandle /* parent_window */,
-                     gpu::SurfaceHandle /* child_window */)
-#endif
-
 #if defined(OS_ANDROID)
 // Response to a GpuMsg_DestroyingVideoSurface message.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_DestroyingVideoSurfaceAck,
                      int /* surface_id */)
 #endif
 
-
-IPC_MESSAGE_CONTROL1(GpuHostMsg_DidCreateOffscreenContext, GURL /* url */)
-
-IPC_MESSAGE_CONTROL3(GpuHostMsg_DidLoseContext,
-                     bool /* offscreen */,
-                     gpu::error::ContextLostReason /* reason */,
-                     GURL /* url */)
-
-IPC_MESSAGE_CONTROL1(GpuHostMsg_DidDestroyOffscreenContext, GURL /* url */)
-
 // Message from GPU to add a GPU log message to the about:gpu page.
 IPC_MESSAGE_CONTROL3(GpuHostMsg_OnLogMessage,
                      int /*severity*/,
                      std::string /* header */,
                      std::string /* message */)
 
 // Sent by the GPU process to indicate that a fields trial has been activated.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_FieldTrialActivated, std::string /* name */)