cc: Remove wtf includes from *LayerTextureUpdater headers

cc/canvas_layer_texture_updater.h

Index: cc/canvas_layer_texture_updater.h
diff --git a/cc/canvas_layer_texture_updater.h b/cc/canvas_layer_texture_updater.h
index 0e79bed0a70737bdfcfea24df15a8550d1780340..f1b5d8fd7ad4f498dabdff3333f3c0148ce055fe 100644
--- a/cc/canvas_layer_texture_updater.h
+++ b/cc/canvas_layer_texture_updater.h
@@ -18,11 +18,9 @@ class LayerPainterChromium;
 // SkPictureCanvasLayerTextureUpdater that reduces code duplication between
 // their respective paintContents implementations.
 class CanvasLayerTextureUpdater : public LayerTextureUpdater {
-public:
-    virtual ~CanvasLayerTextureUpdater();
-
 protected:
     explicit CanvasLayerTextureUpdater(scoped_ptr<LayerPainterChromium>);
+    virtual ~CanvasLayerTextureUpdater();
 
     void paintContents(SkCanvas*, const IntRect& contentRect, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpaqueRect, CCRenderingStats&);
     const IntRect& contentRect() const { return m_contentRect; }