c:: Give the raster source to the PictureLayerTilings.

cc/test/fake_picture_pile_impl.h

Index: cc/test/fake_picture_pile_impl.h
diff --git a/cc/test/fake_picture_pile_impl.h b/cc/test/fake_picture_pile_impl.h
index 5769d3713b0c609015c71a2c9f028ef69c0f6a78..4f7b5af8206b1cbf8836b6edfc9789c30902faf2 100644
--- a/cc/test/fake_picture_pile_impl.h
+++ b/cc/test/fake_picture_pile_impl.h
@@ -17,6 +17,14 @@ namespace cc {
 
 class FakePicturePileImpl : public PicturePileImpl {
  public:
+  static scoped_refptr<FakePicturePileImpl> CreateFilledPileWithDefaultTileSize(
+      const gfx::Size& layer_bounds) {
+    return CreateFilledPile(gfx::Size(512, 512), layer_bounds);
+  }
+  static scoped_refptr<FakePicturePileImpl> CreateEmptyPileWithDefaultTileSize(
+      const gfx::Size& layer_bounds) {
+    return CreateEmptyPile(gfx::Size(512, 512), layer_bounds);
+  }
   static scoped_refptr<FakePicturePileImpl> CreateFilledPile(
       const gfx::Size& tile_size,
       const gfx::Size& layer_bounds);