Command to mark surface inactive, so gpu process can release resources.

content/common/gpu/gpu_messages.h

 // Copyright (c) 2011 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 <vector>
 #include <string>
 
@@ skipping 383 matching lines @@
 #endif
 
 // Tells the proxy that there was an error and the command buffer had to be
 // destroyed for some reason.
 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_Destroyed,
                     gpu::error::ContextLostReason /* reason */)
 
 // Response to a GpuChannelMsg_Echo message.
 IPC_MESSAGE_ROUTED0(GpuCommandBufferMsg_EchoAck)
 
+IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_SetSurfaceVisible, bool /* visible */)
+
 // --------------------------------------------------------------------------
 // TransportTexture messages
 //
 // These are messages sent from renderer process to the GPU proess.
 
 // Destroy corresponding TransportTexture in the GPU process.
 IPC_MESSAGE_ROUTED0(GpuTransportTextureMsg_Destroy)
 
 // Notify that the textures have been created. IDs are in client context.
 IPC_MESSAGE_ROUTED1(GpuTransportTextureMsg_TexturesCreated,
@@ skipping 82 matching lines @@
 
 // Confirm decoder has been reset.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_ResetDone)
 
 // Decoder has faced end of stream marker in the stream.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_EndOfStream)
 
 // Video decoder has encountered an error.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
                     uint32) /* Error ID */