cc: Add DISALLOW_COPY_AND_ASSIGN where appropriate.

cc/input/pinch_zoom_scrollbar_painter.h

Index: cc/input/pinch_zoom_scrollbar_painter.h
diff --git a/cc/input/pinch_zoom_scrollbar_painter.h b/cc/input/pinch_zoom_scrollbar_painter.h
index 1a70a748a0d4c33b4911da58f4f74ac6a00893b2..77bd87b3d3c20d65e2929d6397c1e09b00c667e1 100644
--- a/cc/input/pinch_zoom_scrollbar_painter.h
+++ b/cc/input/pinch_zoom_scrollbar_painter.h
@@ -5,6 +5,7 @@
 #ifndef CC_INPUT_PINCH_ZOOM_SCROLLBAR_PAINTER_H_
 #define CC_INPUT_PINCH_ZOOM_SCROLLBAR_PAINTER_H_
 
+#include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "cc/layers/scrollbar_theme_painter.h"
 
@@ -27,6 +28,9 @@ class PinchZoomScrollbarPainter : public ScrollbarThemePainter {
   virtual void PaintForwardButtonEnd(SkCanvas* canvas, gfx::Rect rect) OVERRIDE;
   virtual void PaintTickmarks(SkCanvas* canvas, gfx::Rect rect) OVERRIDE;
   virtual void PaintThumb(SkCanvas* canvas, gfx::Rect rect) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PinchZoomScrollbarPainter);
 };
 
 }  // namespace cc