[not for review - epic CL] Adding Elastic+Momentum+Layered scrolling to views::ScrollView

cc/trees/layer_tree_host_unittest.cc

 // Copyright 2011 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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 4481 matching lines @@
                                          page_scale_layer,
                                          inner_viewport_scroll_layer, nullptr);
     LayerTreeHostTest::SetupTree();
     client_.set_bounds(content_layer->bounds());
   }
 
   void BeginTest() override { PostSetNeedsCommitToMainThread(); }
 
   void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) override {
     if (host_impl->sync_tree()->source_frame_number() == 0) {
-      scroll_elasticity_helper_ = host_impl->CreateScrollElasticityHelper();
+      scroll_elasticity_helper_ = host_impl->CreateRootScrollElasticityHelper();
     }
   }
 
   void DrawLayersOnThread(LayerTreeHostImpl* host_impl) override {
     num_draws_++;
     LayerImpl* content_layer_impl =
         host_impl->active_tree()->LayerById(content_layer_id_);
     gfx::Transform expected_draw_transform;
     switch (num_draws_) {
       case 1:
@@ skipping 2495 matching lines @@
     EndTest();
   }
 
   void AfterTest() override {}
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestSubmitFrameResources);
 
 }  // namespace
 }  // namespace cc