Plumb a Browser->GPU surface destruction message for Android VDAs

content/browser/gpu/gpu_process_host.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.
 
 #ifndef CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 135 matching lines @@
       const gfx::Size& size,
       gfx::BufferFormat format,
       int client_id,
       const CreateGpuMemoryBufferCallback& callback);
 
   // Tells the GPU process to destroy GPU memory buffer.
   void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
                               int client_id,
                               const gpu::SyncToken& sync_token);
 
+#if defined(OS_ANDROID)
+  // Tells the GPU process that the given surface is being destroyed so that it
+  // can stop using it.
+  void SendDestroyingVideoSurface(int surface_id, const base::Closure& done_cb);
+#endif
+
   // What kind of GPU process, e.g. sandboxed or unsandboxed.
   GpuProcessKind kind();
 
   // Forcefully terminates the GPU process.
   void ForceShutdown();
 
   // Asks the GPU process to stop by itself.
   void StopGpuProcess();
 
   void LoadedShader(const std::string& key, const std::string& data);
@@ skipping 13 matching lines @@
   bool OnMessageReceived(const IPC::Message& message) override;
   void OnChannelConnected(int32_t peer_pid) override;
   void OnProcessLaunched() override;
   void OnProcessLaunchFailed() override;
   void OnProcessCrashed(int exit_code) override;
 
   // Message handlers.
   void OnInitialized(bool result, const gpu::GPUInfo& gpu_info);
   void OnChannelEstablished(const IPC::ChannelHandle& channel_handle);
   void OnGpuMemoryBufferCreated(const gfx::GpuMemoryBufferHandle& handle);
+#if defined(OS_ANDROID)
+  void OnDestroyingVideoSurfaceAck(int surface_id);
+#endif
   void OnDidCreateOffscreenContext(const GURL& url);
   void OnDidLoseContext(bool offscreen,
                         gpu::error::ContextLostReason reason,
                         const GURL& url);
   void OnDidDestroyOffscreenContext(const GURL& url);
   void OnGpuMemoryUmaStatsReceived(const gpu::GPUMemoryUmaStats& stats);
 #if defined(OS_MACOSX)
   void OnAcceleratedSurfaceBuffersSwapped(const IPC::Message& message);
 #endif
 
@@ skipping 24 matching lines @@
   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
   int host_id_;
 
   // These are the channel requests that we have already sent to
   // the GPU process, but haven't heard back about yet.
   std::queue<EstablishChannelRequest> channel_requests_;
 
   // The pending create gpu memory buffer requests we need to reply to.
   std::queue<CreateGpuMemoryBufferCallback> create_gpu_memory_buffer_requests_;
 
+  // A callback to signal the completion of a SendDestroyingVideoSurface call.
+  base::Closure send_destroying_video_surface_done_cb_;
+
   // Qeueud messages to send when the process launches.
   std::queue<IPC::Message*> queued_messages_;
 
   // Whether the GPU process is valid, set to false after Send() failed.
   bool valid_;
 
   // Whether we are running a GPU thread inside the browser process instead
   // of a separate GPU process.
   bool in_process_;
 
@@ skipping 49 matching lines @@
   // Browser-side Mojo endpoint which sets up a Mojo channel with the child
   // process and contains the browser's ServiceRegistry.
   std::unique_ptr<MojoApplicationHost> mojo_application_host_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_