Cache viewport rect for tile priority in UpdateTiles

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 5795d5588ede6018d75f7e24a7464c39cadcbbba..b70bc7b06dc76a40fac608792b64d2f12c41b899 100644
--- a/cc/test/fake_picture_layer_impl.h
+++ b/cc/test/fake_picture_layer_impl.h
@@ -77,7 +77,7 @@ class FakePictureLayerImpl : public PictureLayerImpl {
   using PictureLayerImpl::CleanUpTilingsOnActiveLayer;
   using PictureLayerImpl::CanHaveTilings;
   using PictureLayerImpl::MinimumContentsScale;
-  using PictureLayerImpl::GetViewportForTilePriorityInContentSpace;
+  using PictureLayerImpl::GetViewportForTilePriorityInContentSpaceForTesting;

[danakj, 2015/01/21 18:47:40]

instead of exposing a ForTesting method, you can just add an accessor method to
this class. like invalidation()

[hush (inactive), 2015/01/21 22:21:10]

Done.

   using PictureLayerImpl::SanityCheckTilingState;
   using PictureLayerImpl::GetRecycledTwinLayer;
   using PictureLayerImpl::UpdateRasterSource;