Pass responsibility for IOSurface-texture reuse to the gpu process.

gpu/ipc/common/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>
 #include <vector>
 
 #include "base/memory/shared_memory.h"
 #include "build/build_config.h"
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/common/gpu_memory_allocation.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "gpu/command_buffer/common/sync_token.h"
+#include "gpu/command_buffer/common/texture_in_use_response.h"
 #include "gpu/config/gpu_info.h"
 #include "gpu/gpu_export.h"
 #include "gpu/ipc/common/gpu_command_buffer_traits.h"
 #include "gpu/ipc/common/gpu_param_traits.h"
 #include "gpu/ipc/common/surface_handle.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/events/ipc/latency_info_param_traits.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/size.h"
@@ skipping 48 matching lines @@
   // the browser process.
   // https://crbug.com/604052
   IPC_STRUCT_MEMBER(gpu::SurfaceHandle, surface_handle)
   // Only one of ca_context_id or io_surface may be non-0.
   IPC_STRUCT_MEMBER(CAContextID, ca_context_id)
   IPC_STRUCT_MEMBER(bool, fullscreen_low_power_ca_context_valid)
   IPC_STRUCT_MEMBER(CAContextID, fullscreen_low_power_ca_context_id)
   IPC_STRUCT_MEMBER(gfx::ScopedRefCountedIOSurfaceMachPort, io_surface)
   IPC_STRUCT_MEMBER(gfx::Size, pixel_size)
   IPC_STRUCT_MEMBER(float, scale_factor)
+  IPC_STRUCT_MEMBER(gpu::TextureInUseResponses, in_use_responses)
 #endif
   IPC_STRUCT_MEMBER(std::vector<ui::LatencyInfo>, latency_info)
   IPC_STRUCT_MEMBER(gfx::SwapResult, result)
 IPC_STRUCT_END()
 
 //------------------------------------------------------------------------------
 // GPU Channel Messages
 // These are messages from a renderer process to the GPU process.
 
 // Tells the GPU process to create a new command buffer. A corresponding
@@ skipping 141 matching lines @@
                     GpuCommandBufferMsg_CreateImage_Params /* params */)
 
 // Destroy a previously created image.
 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_DestroyImage, int32_t /* id */)
 
 // Attaches an external image stream to the client texture.
 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_CreateStreamTexture,
                            uint32_t, /* client_texture_id */
                            int32_t,  /* stream_id */
                            bool /* succeeded */)