cc: LayerTreeHostImpl uses element id to tick animations

cc/trees/layer_tree_host_unittest_picture.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include "cc/test/fake_content_layer_client.h"
 #include "cc/test/fake_picture_layer.h"
 #include "cc/test/fake_picture_layer_impl.h"
 #include "cc/test/layer_tree_test.h"
@@ skipping 232 matching lines @@
         int num_tiles_y = tiling->TilingDataForTesting().num_tiles_y();
 
         // There should be tiles at the top of the picture layer but not at the
         // bottom.
         EXPECT_TRUE(tiling->TileAt(0, 0));
         EXPECT_FALSE(tiling->TileAt(0, num_tiles_y));
 
         // Make the bottom of the layer visible.
         gfx::Transform transform;
         transform.Translate(0.f, -100000.f + 100.f);
-        impl->active_tree()
-            ->property_trees()
-            ->transform_tree.OnTransformAnimated(
-                transform, picture_impl->transform_tree_index(),
-                impl->active_tree());
+        impl->active_tree()->SetTransformMutated(picture_impl->element_id(),
+                                                 transform);
         impl->SetNeedsRedraw();
         break;
       }
       case 2: {
         PictureLayerTiling* tiling = picture_impl->HighResTiling();
 
         // There not be tiles at the top of the layer now.
         EXPECT_FALSE(tiling->TileAt(0, 0));
 
         // Make the top of the layer visible again.
-        impl->active_tree()
-            ->property_trees()
-            ->transform_tree.OnTransformAnimated(
-                gfx::Transform(), picture_impl->transform_tree_index(),
-                impl->active_tree());
+        impl->active_tree()->SetTransformMutated(picture_impl->element_id(),
+                                                 gfx::Transform());
         impl->SetNeedsRedraw();
         break;
       }
       case 3: {
         PictureLayerTiling* tiling = picture_impl->HighResTiling();
         int num_tiles_y = tiling->TilingDataForTesting().num_tiles_y();
 
         // There should be tiles at the top of the picture layer again.
         EXPECT_TRUE(tiling->TileAt(0, 0));
         EXPECT_FALSE(tiling->TileAt(0, num_tiles_y));
@@ skipping 388 matching lines @@
   void AfterTest() override {}
 
   scoped_refptr<FakePictureLayer> will_change_layer_;
   scoped_refptr<FakePictureLayer> normal_layer_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostPictureTestForceRecalculateScales);
 
 }  // namespace
 }  // namespace cc