Chromium -> Mojo roll.

cc/test/fake_picture_layer_impl.h

Index: cc/test/fake_picture_layer_impl.h
diff --git a/cc/test/fake_picture_layer_impl.h b/cc/test/fake_picture_layer_impl.h
index 115fe553b461fb8017bbe4ed30a2b0bb344b8568..ca29b9bef79d730a5f34e4bfbb534b5e285c4992 100644
--- a/cc/test/fake_picture_layer_impl.h
+++ b/cc/test/fake_picture_layer_impl.h
@@ -83,6 +83,10 @@ class FakePictureLayerImpl : public PictureLayerImpl {
   using PictureLayerImpl::UpdateIdealScales;
   using PictureLayerImpl::MaximumTilingContentsScale;
 
+  void AddTilingUntilNextDraw(float scale) {
+    last_append_quads_tilings_.push_back(AddTiling(scale));
+  }
+
   float raster_page_scale() const { return raster_page_scale_; }
   void set_raster_page_scale(float scale) { raster_page_scale_ = scale; }