cc: Add DISALLOW_COPY_AND_ASSIGN where appropriate.

cc/layers/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 CC_LAYERS_SCROLLBAR_LAYER_IMPL_H_
 #define CC_LAYERS_SCROLLBAR_LAYER_IMPL_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/scrollbar_geometry_fixed_thumb.h"
 #include "cc/layers/scrollbar_layer_impl_base.h"
@@ skipping 82 matching lines @@
         const;
     virtual WebScrollbar::ScrollbarControlSize controlSize() const;
     virtual WebScrollbar::ScrollbarPart pressedPart() const;
     virtual WebScrollbar::ScrollbarPart hoveredPart() const;
     virtual WebScrollbar::ScrollbarOverlayStyle scrollbarOverlayStyle() const;
     virtual WebScrollbar::Orientation orientation() const;
     virtual bool isCustomScrollbar() const;
 
    private:
     ScrollbarLayerImpl* owner_;
+
+    DISALLOW_COPY_AND_ASSIGN(Scrollbar);
   };
 
   virtual const char* LayerTypeAsString() const OVERRIDE;
 
   gfx::Rect ScrollbarLayerRectToContentRect(gfx::RectF layer_rect) const;
 
   Scrollbar scrollbar_;
 
   ResourceProvider::ResourceId back_track_resource_id_;
   ResourceProvider::ResourceId fore_track_resource_id_;
@@ skipping 23 matching lines @@
   WebKit::WebScrollbar::Orientation orientation_;
   WebKit::WebScrollbar::ScrollbarControlSize control_size_;
   WebKit::WebScrollbar::ScrollbarPart pressed_part_;
   WebKit::WebScrollbar::ScrollbarPart hovered_part_;
 
   bool is_scrollable_area_active_;
   bool is_scroll_view_scrollbar_;
   bool enabled_;
   bool is_custom_scrollbar_;
   bool is_overlay_scrollbar_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScrollbarLayerImpl);
 };
 
 }  // namespace cc
 #endif  // CC_LAYERS_SCROLLBAR_LAYER_IMPL_H_