Makes tile-creation lazy

cc/test/fake_picture_layer_tiling_client.cc

Index: cc/test/fake_picture_layer_tiling_client.cc
diff --git a/cc/test/fake_picture_layer_tiling_client.cc b/cc/test/fake_picture_layer_tiling_client.cc
index 0ee0483fedc302c5eaf77ef836ff8b63710fa5a1..5722b78ae8e0c97885fc2222ed147b3513dbf25b 100644
--- a/cc/test/fake_picture_layer_tiling_client.cc
+++ b/cc/test/fake_picture_layer_tiling_client.cc
@@ -53,9 +53,17 @@ void FakePictureLayerTilingClient::SetTileSize(gfx::Size tile_size) {
 }
 
 gfx::Size FakePictureLayerTilingClient::CalculateTileSize(
-    gfx::Size /* current_tile_size */,
     gfx::Size /* content_bounds */) {
   return tile_size_;
 }
 
+const Region* FakePictureLayerTilingClient::GetInvalidation() {
+  return NULL;
+}
+
+const PictureLayerTiling* FakePictureLayerTilingClient::GetTwinTiling(
+      const PictureLayerTiling* tiling) {
+  return NULL;
+}
+
 }  // namespace cc