Switch DRM platform to using a separate thread

ui/ozone/platform/drm/gpu/drm_window_unittest.cc

 // 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.
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkCanvas.h"
@@ skipping 68 matching lines @@
   screen_manager_.reset(new ui::ScreenManager(buffer_generator_.get()));
   screen_manager_->AddDisplayController(drm_, kDefaultCrtc, kDefaultConnector);
   screen_manager_->ConfigureDisplayController(
       drm_, kDefaultCrtc, kDefaultConnector, gfx::Point(), kDefaultMode);
 
   drm_device_manager_.reset(new ui::DrmDeviceManager(nullptr));
 
   scoped_ptr<ui::DrmWindow> window(new ui::DrmWindow(
       kDefaultWidgetHandle, drm_device_manager_.get(), screen_manager_.get()));
   window->Initialize();
-  window->OnBoundsChanged(
+  window->SetBounds(
       gfx::Rect(gfx::Size(kDefaultMode.hdisplay, kDefaultMode.vdisplay)));
   screen_manager_->AddWindow(kDefaultWidgetHandle, window.Pass());
 }
 
 void DrmWindowTest::TearDown() {
   scoped_ptr<ui::DrmWindow> window =
       screen_manager_->RemoveWindow(kDefaultWidgetHandle);
   window->Shutdown();
   message_loop_.reset();
 }
@@ skipping 32 matching lines @@
 
   // Add another device.
   scoped_refptr<ui::MockDrmDevice> drm = new ui::MockDrmDevice();
   screen_manager_->AddDisplayController(drm, kDefaultCrtc, kDefaultConnector);
   screen_manager_->ConfigureDisplayController(
       drm, kDefaultCrtc, kDefaultConnector,
       gfx::Point(0, kDefaultMode.vdisplay), kDefaultMode);
 
   // Move window to the display on the new device.
   screen_manager_->GetWindow(kDefaultWidgetHandle)
-      ->OnBoundsChanged(gfx::Rect(0, kDefaultMode.vdisplay,
-                                  kDefaultMode.hdisplay,
-                                  kDefaultMode.vdisplay));
+      ->SetBounds(gfx::Rect(0, kDefaultMode.vdisplay, kDefaultMode.hdisplay,
+                            kDefaultMode.vdisplay));
 
   EXPECT_EQ(2u, GetCursorBuffers(drm).size());
   // Make sure the cursor is showing on the new display.
   EXPECT_NE(0u, drm->get_cursor_handle_for_crtc(kDefaultCrtc));
 }