[Ozone-DRI] Add support for asynchronous display configuration

ui/ozone/common/gpu/ozone_gpu_messages.h

 // Copyright 2014 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 "ipc/ipc_message_macros.h"
@@ skipping 62 matching lines @@
 // Updates the location and size of the widget on the screen.
 IPC_MESSAGE_CONTROL2(OzoneGpuMsg_WindowBoundsChanged,
                      gfx::AcceleratedWidget /* widget */,
                      gfx::Rect /* bounds */)
 
 // Force the DPMS state of the display to on.
 IPC_MESSAGE_CONTROL0(OzoneGpuMsg_ForceDPMSOn)
 
 // Trigger a display reconfiguration. OzoneHostMsg_UpdateNativeDisplays will be
 // sent as a response.
-// The |displays| parameter will hold a list of last known displays.
-IPC_MESSAGE_CONTROL1(OzoneGpuMsg_RefreshNativeDisplays,
-                     std::vector<ui::DisplaySnapshot_Params> /* displays */)
+IPC_MESSAGE_CONTROL0(OzoneGpuMsg_RefreshNativeDisplays)
 
 // Configure a display with the specified mode at the specified location.
 IPC_MESSAGE_CONTROL3(OzoneGpuMsg_ConfigureNativeDisplay,
                      int64_t,  // display ID
                      ui::DisplayMode_Params,  // display mode
                      gfx::Point)  // origin for the display
 
 IPC_MESSAGE_CONTROL1(OzoneGpuMsg_DisableNativeDisplay,
                      int64_t)  // display ID
 
 IPC_MESSAGE_CONTROL1(OzoneGpuMsg_AddGraphicsDevice,
                      base::FilePath /* device_path */)
 
 IPC_MESSAGE_CONTROL1(OzoneGpuMsg_RemoveGraphicsDevice,
                      base::FilePath /* device_path */)
 
 // Take control of the display
 IPC_MESSAGE_CONTROL0(OzoneGpuMsg_TakeDisplayControl)
 
 // Let other entity control the display
 IPC_MESSAGE_CONTROL0(OzoneGpuMsg_RelinquishDisplayControl)
 
 //------------------------------------------------------------------------------
 // Browser Messages
 // These messages are from the GPU to the browser process.
 
 // Updates the list of active displays.
 IPC_MESSAGE_CONTROL1(OzoneHostMsg_UpdateNativeDisplays,
                      std::vector<ui::DisplaySnapshot_Params>)
+
+IPC_MESSAGE_CONTROL2(OzoneHostMsg_DisplayConfigured,
+                     int64_t /* display_id */,
+                     bool /* status */)