Remove GPU relinquish resources infrastructure and stop GPU process.

content/common/gpu/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 <string>
 #include <vector>
 
@@ skipping 242 matching lines @@
 // 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_CONTROL0(GpuMsg_Initialize)
 
+// 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.
 IPC_MESSAGE_CONTROL3(GpuMsg_EstablishChannel,
                      int /* client_id */,
                      bool /* share_context */,
                      bool /* allow_future_sync_points */)
 
@@ skipping 53 matching lines @@
 
 // Tells the GPU process to hang.
 IPC_MESSAGE_CONTROL0(GpuMsg_Hang)
 
 // Tells the GPU process to disable the watchdog thread.
 IPC_MESSAGE_CONTROL0(GpuMsg_DisableWatchdog)
 
 // Tells the GPU process that the browser has seen a GPU switch.
 IPC_MESSAGE_CONTROL0(GpuMsg_GpuSwitched)
 
-// Tells the GPU process to delete the default_offscreen surface. It will also
-// close the display and any other resources when the last GL surface is
-// deleted. GPU process will respond with GphHosMsg_ResourcesRelinquished.
-IPC_MESSAGE_CONTROL0(GpuMsg_RelinquishResources)
-
 // Sends an input event to the gpu service.
 IPC_MESSAGE_CONTROL3(GpuMsg_UpdateValueState,
                      int, /* client_id */
                      unsigned int, /* target */
                      gpu::ValueState /* valuestate */)
 
 //------------------------------------------------------------------------------
 // GPU Host Messages
 // These are messages to the browser.
 
@@ skipping 84 matching lines @@
                      gpu::error::ContextLostReason /* reason */,
                      GURL /* url */)
 
 IPC_MESSAGE_CONTROL1(GpuHostMsg_DidDestroyOffscreenContext,
                      GURL /* url */)
 
 // Tells the browser about GPU memory usage statistics for UMA logging.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_GpuMemoryUmaStats,
                      content::GPUMemoryUmaStats /* GPU memory UMA stats */)
 
-// Response to GpuMsg_RelinquishResources.
-IPC_MESSAGE_CONTROL0(GpuHostMsg_ResourcesRelinquished)
-
 // Tells the browser that a context has subscribed to a new target and
 // the browser should start sending the corresponding information
 IPC_MESSAGE_CONTROL2(GpuHostMsg_AddSubscription,
                      int32 /* client_id */,
                      unsigned int /* target */)
 
 // Tells the browser that no contexts are subscribed to the target anymore
 // so the browser should stop sending the corresponding information
 IPC_MESSAGE_CONTROL2(GpuHostMsg_RemoveSubscription,
                      int32 /* client_id */,
@@ skipping 339 matching lines @@
 IPC_MESSAGE_ROUTED0(AcceleratedJpegDecoderMsg_Destroy)
 
 //------------------------------------------------------------------------------
 // Accelerated JPEG Decoder Host Messages
 // These messages are sent from the GPU process to Browser process.
 //
 // Report decode status.
 IPC_MESSAGE_ROUTED2(AcceleratedJpegDecoderHostMsg_DecodeAck,
                     int32, /* bitstream_buffer_id */
                     media::JpegDecodeAccelerator::Error /* error */)