cc: Remove tiles from recycle tree that were deleted on active.

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 4b68d7f0128d516566ba85eed80fa9a248b71dd1..41340a87cc93f9545c30c867cdec4141f19f3d89 100644
--- a/cc/test/fake_picture_layer_impl.h
+++ b/cc/test/fake_picture_layer_impl.h
@@ -64,6 +64,8 @@ class FakePictureLayerImpl : public PictureLayerImpl {
   using PictureLayerImpl::UpdateIdealScales;
   using PictureLayerImpl::MaximumTilingContentsScale;
 
+  PictureLayerImpl* GetRecycledTwinLayer() { return recycled_twin_layer_; }
+
   void SetNeedsPostCommitInitialization() {
     needs_post_commit_initialization_ = true;
   }