gpu: Add sync token dependencies to flush metadata.

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>
@@ skipping 157 matching lines @@
 // Wait until the get offset is in a specific range, inclusive.
 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_WaitForGetOffsetInRange,
                            int32_t /* start */,
                            int32_t /* end */,
                            gpu::CommandBuffer::State /* state */)
 
 // Asynchronously synchronize the put and get offsets of both processes.
 // Caller passes its current put offset. Current state (including get offset)
 // is returned in shared memory. The input latency info for the current
 // frame is also sent to the GPU process.
-IPC_MESSAGE_ROUTED3(GpuCommandBufferMsg_AsyncFlush,
+IPC_MESSAGE_ROUTED4(GpuCommandBufferMsg_AsyncFlush,
                     int32_t /* put_offset */,
                     uint32_t /* flush_count */,
-                    std::vector<ui::LatencyInfo> /* latency_info */)
+                    std::vector<ui::LatencyInfo> /* latency_info */,
+                    std::vector<gpu::SyncToken> /* sync_token_fences */)
 
 // Sent by the GPU process to display messages in the console.
 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_ConsoleMsg,
                     GPUCommandBufferConsoleMessage /* msg */)
 
 // Register an existing shared memory transfer buffer. The id that can be
 // used to identify the transfer buffer from a command buffer.
 IPC_MESSAGE_ROUTED3(GpuCommandBufferMsg_RegisterTransferBuffer,
                     int32_t /* id */,
                     base::SharedMemoryHandle /* transfer_buffer */,
@@ skipping 47 matching lines @@
 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 */)
 
 // Start or stop VSync sygnal production on GPU side (Windows only).
 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_SetNeedsVSync, bool /* needs_vsync */)