cc: Remove wtf includes from *LayerTextureUpdater headers

cc/content_layer_unittest.cc

Index: cc/content_layer_unittest.cc
diff --git a/cc/content_layer_unittest.cc b/cc/content_layer_unittest.cc
index dc84df77ada73f24432af266d5928e49286c03ab..500683d011b14b4658c5993fec30dc8424617436 100644
--- a/cc/content_layer_unittest.cc
+++ b/cc/content_layer_unittest.cc
@@ -44,7 +44,7 @@ TEST(ContentLayerChromiumTest, ContentLayerPainterWithDeviceScale)
     IntRect opaqueRectInContentSpace = opaqueRectInLayerSpace;
     opaqueRectInContentSpace.scale(contentsScale);
     MockContentLayerChromiumClient client(opaqueRectInLayerSpace);
-    RefPtr<BitmapCanvasLayerTextureUpdater> updater = BitmapCanvasLayerTextureUpdater::create(ContentLayerPainter::create(&client).PassAs<LayerPainterChromium>());
+    scoped_refptr<BitmapCanvasLayerTextureUpdater> updater = BitmapCanvasLayerTextureUpdater::create(ContentLayerPainter::create(&client).PassAs<LayerPainterChromium>());
 
     IntRect resultingOpaqueRect;
     CCRenderingStats stats;