cc: Remove recycled twin information from picture layer tiling set.

cc/layers/picture_layer_impl_unittest.cc

Index: cc/layers/picture_layer_impl_unittest.cc
diff --git a/cc/layers/picture_layer_impl_unittest.cc b/cc/layers/picture_layer_impl_unittest.cc
index 75725257282d60c1134d7f594fd647ce6f84cf9c..2b4f8dc8ea24c65d4a3cc03bf6dcf19a9207c069 100644
--- a/cc/layers/picture_layer_impl_unittest.cc
+++ b/cc/layers/picture_layer_impl_unittest.cc
@@ -4602,33 +4602,6 @@ TEST_F(PictureLayerImplTest, PendingOrActiveTwinLayer) {
   EXPECT_FALSE(active_layer_->GetPendingOrActiveTwinLayer());
 }
 
-TEST_F(PictureLayerImplTest, RecycledTwinLayer) {
-  gfx::Size tile_size(102, 102);
-  gfx::Size layer_bounds(1000, 1000);
-
-  scoped_refptr<FakePicturePileImpl> pile =
-      FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
-  SetupPendingTree(pile);
-  EXPECT_FALSE(pending_layer_->GetRecycledTwinLayer());
-
-  ActivateTree();
-  EXPECT_TRUE(active_layer_->GetRecycledTwinLayer());
-  EXPECT_EQ(old_pending_layer_, active_layer_->GetRecycledTwinLayer());
-
-  SetupPendingTree(pile);
-  EXPECT_FALSE(pending_layer_->GetRecycledTwinLayer());
-  EXPECT_FALSE(active_layer_->GetRecycledTwinLayer());
-
-  ActivateTree();
-  EXPECT_TRUE(active_layer_->GetRecycledTwinLayer());
-  EXPECT_EQ(old_pending_layer_, active_layer_->GetRecycledTwinLayer());
-
-  // Make an empty pending tree.
-  host_impl_.CreatePendingTree();
-  host_impl_.pending_tree()->DetachLayerTree();
-  EXPECT_FALSE(active_layer_->GetRecycledTwinLayer());
-}
-
 void PictureLayerImplTest::TestQuadsForSolidColor(bool test_for_solid) {
   base::TimeTicks time_ticks;
   time_ticks += base::TimeDelta::FromMilliseconds(1);