Switch DRM platform to using a separate thread

ui/ozone/platform/drm/gpu/drm_window.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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_GPU_DRM_WINDOW_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_DRM_WINDOW_H_
 
 #include <vector>
 
 #include "base/timer/timer.h"
@@ skipping 10 matching lines @@
 class SkBitmap;
 
 namespace gfx {
 class Point;
 class Rect;
 }  // namespace gfx
 
 namespace ui {
 
 class DrmBuffer;
+class DrmDevice;
 class DrmDeviceManager;
 class HardwareDisplayController;
 struct OverlayCheck_Params;
 class ScanoutBufferGenerator;
 class ScreenManager;
 
 // The GPU object representing a window.
 //
 // The main purpose of this object is to associate drawing surfaces with
 // displays. A surface created with the same id as the window (from
@@ skipping 19 matching lines @@
   // Returns the accelerated widget associated with the window.
   gfx::AcceleratedWidget GetAcceleratedWidget();
 
   // Returns the current controller the window is displaying on. Callers should
   // not cache the result as the controller may change as the window is moved.
   HardwareDisplayController* GetController();
 
   void SetController(HardwareDisplayController* controller);
 
   // Called when the window is resized/moved.
-  void OnBoundsChanged(const gfx::Rect& bounds);
+  void SetBounds(const gfx::Rect& bounds);
 
   // Update the HW cursor bitmap & move to specified location. If
   // the bitmap is empty, the cursor is hidden.
   void SetCursor(const std::vector<SkBitmap>& bitmaps,
                  const gfx::Point& location,
                  int frame_delay_ms);
 
   // Update the HW cursor bitmap & move to specified location. If
   // the bitmap is empty, the cursor is hidden.
   void SetCursorWithoutAnimations(const std::vector<SkBitmap>& bitmaps,
@@ skipping 50 matching lines @@
   OverlayPlaneList last_submitted_planes_;
 
   bool force_buffer_reallocation_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(DrmWindow);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_WINDOW_H_