Remove cross-repo OVERRIDE annotations and IWYU-ify comp bindings

webkit/compositor_bindings/web_scrollbar_layer_impl.h

 // Copyright 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.
 
 #ifndef WebScrollbarLayerImpl_h
 #define WebScrollbarLayerImpl_h
 
 #include "base/memory/scoped_ptr.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbarLayer.h"
 #include "webkit/compositor_bindings/webkit_compositor_bindings_export.h"
 
 namespace WebKit {
+
 class WebLayerImpl;
+class WebScrollbar;
+class WebScrollbarThemeGeometry;
+class WebScrollbarThemePainter;
 
 class WebScrollbarLayerImpl : public WebScrollbarLayer {
  public:
   WEBKIT_COMPOSITOR_BINDINGS_EXPORT WebScrollbarLayerImpl(
       WebScrollbar*,
       WebScrollbarThemePainter,
       WebScrollbarThemeGeometry*);
   virtual ~WebScrollbarLayerImpl();
 
   // WebScrollbarLayer implementation.
-  virtual WebLayer* layer() OVERRIDE;
-  virtual void setScrollLayer(WebLayer*) OVERRIDE;
+  virtual WebLayer* layer();
+  virtual void setScrollLayer(WebLayer*);
 
  private:
   scoped_ptr<WebLayerImpl> layer_;
 };
 
 }
 
 #endif  // WebScrollbarLayerImpl_h