Make GetRootWindow() return a Window instead of a RootWindow.

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/basictypes.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 83 matching lines @@
   }
 
   virtual scoped_ptr<ResizeLock> CreateResizeLock(bool defer_compositor_lock)
       OVERRIDE {
     gfx::Size desired_size = window()->bounds().size();
     return scoped_ptr<ResizeLock>(
         new FakeResizeLock(desired_size, defer_compositor_lock));
   }
 
   void RunOnCompositingDidCommit() {
-    OnCompositingDidCommit(window()->GetRootWindow()->compositor());
+    OnCompositingDidCommit(window()->GetDispatcher()->compositor());
   }
 
   // A lock that doesn't actually do anything to the compositor, and does not
   // time out.
   class FakeResizeLock : public ResizeLock {
    public:
     FakeResizeLock(const gfx::Size new_size, bool defer_compositor_lock)
         : ResizeLock(new_size, defer_compositor_lock) {}
   };
 
@@ skipping 786 matching lines @@
   EXPECT_CALL(observer, OnWindowPaintScheduled(view_->window_, view_rect));
   view_->OnSwapCompositorFrame(
       3, MakeDelegatedFrame(1.f, frame_size, view_rect));
   testing::Mock::VerifyAndClearExpectations(&observer);
   view_->RunOnCompositingDidCommit();
 
   view_->window_->RemoveObserver(&observer);
 }
 
 }  // namespace content