[Ozone-GBM] Adding NativeWindowDelegate to IPC window changes to the GPU

ui/ozone/platform/dri/gpu/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 "ipc/ipc_message_macros.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/ipc/gfx_param_traits.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/ozone/ozone_export.h"
+
+#undef IPC_MESSAGE_EXPORT
+#define IPC_MESSAGE_EXPORT OZONE_EXPORT
+
+#define IPC_MESSAGE_START OzoneGpuMsgStart

[dnicoara, 2014/08/16 00:34:00]

spang@ pointed out that I can't do this in here since it would conflict with the
ones in ui/ozone/common/gpu. We reached a solution and I'll just make the
NativeWindowDelegate generic and shareable between platforms.

+
+//------------------------------------------------------------------------------
+// GPU Messages
+// These are messages from the browser to the GPU process.
+
+// Explicit creation of a NativeWindowDelegate. We explicitly create the window
+// delegate such that any state change in the window is not lost while the
+// surface is created on the GPU side.
+IPC_MESSAGE_CONTROL1(DriGpuMsg_CreateNativeWindowDelegate,
+                     gfx::AcceleratedWidget /* widget */)
+
+IPC_MESSAGE_CONTROL1(DriGpuMsg_DestoryNativeWindowDelegate,
+                     gfx::AcceleratedWidget /* widget */)
+
+// Updates the location and size of the widget on the screen.
+IPC_MESSAGE_CONTROL2(DriGpuMsg_NativeWindowBoundsChanged,
+                     gfx::AcceleratedWidget /* widget */,
+                     gfx::Rect /* bounds */)