Clean up RenderWidget/RenderWidgetCompositor/WebKit interactions

webkit/compositor_bindings/web_compositor_support_impl.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 "webkit/compositor_bindings/web_compositor_support_impl.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop_proxy.h"
 #include "cc/output_surface.h"
 #include "cc/software_output_device.h"
@@ skipping 18 matching lines @@
 using WebKit::WebAnimationCurve;
 using WebKit::WebContentLayer;
 using WebKit::WebContentLayerClient;
 using WebKit::WebExternalTextureLayer;
 using WebKit::WebExternalTextureLayerClient;
 using WebKit::WebFloatAnimationCurve;
 using WebKit::WebIOSurfaceLayer;
 using WebKit::WebImageLayer;
 using WebKit::WebImageLayer;
 using WebKit::WebLayer;
-using WebKit::WebLayerTreeView;
-using WebKit::WebLayerTreeViewClient;
 using WebKit::WebScrollbar;
 using WebKit::WebScrollbarLayer;
 using WebKit::WebScrollbarThemeGeometry;
 using WebKit::WebScrollbarThemePainter;
 using WebKit::WebSolidColorLayer;
 using WebKit::WebTransformAnimationCurve;
 using WebKit::WebTransformOperations;
 using WebKit::WebVideoFrameProvider;
 using WebKit::WebVideoLayer;
 
@@ skipping 93 matching lines @@
 WebTransformAnimationCurve*
 WebCompositorSupportImpl::createTransformAnimationCurve() {
   return new WebKit::WebTransformAnimationCurveImpl();
 }
 
 WebTransformOperations* WebCompositorSupportImpl::createTransformOperations() {
   return new WebTransformOperationsImpl();
 }
 
 }  // namespace webkit