Move LayerImpl's bounds_delta to property trees

cc/trees/layer_tree_host_impl.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_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1927 matching lines @@
           ? active_tree_->bottom_controls_height()
           : 0.f;
   delta_from_top_controls +=
       bottom_controls_layout_height -
       browser_controls_offset_manager_->ContentBottomOffset();
 
   // Adjust the viewport layers by shrinking/expanding the container to account
   // for changes in the size (e.g. browser controls) since the last resize from
   // Blink.
   gfx::Vector2dF amount_to_expand(0.f, delta_from_top_controls);
-  inner_container->SetBoundsDelta(amount_to_expand);
+  inner_container->SetViewportBoundsDelta(amount_to_expand);
 
   if (outer_container && !outer_container->BoundsForScrolling().IsEmpty()) {
     // Adjust the outer viewport container as well, since adjusting only the
     // inner may cause its bounds to exceed those of the outer, causing scroll
     // clamping.
     gfx::Vector2dF amount_to_expand_scaled = gfx::ScaleVector2d(
         amount_to_expand, 1.f / active_tree_->min_page_scale_factor());
-    outer_container->SetBoundsDelta(amount_to_expand_scaled);
-    active_tree_->InnerViewportScrollLayer()->SetBoundsDelta(
+    outer_container->SetViewportBoundsDelta(amount_to_expand_scaled);
+    active_tree_->InnerViewportScrollLayer()->SetViewportBoundsDelta(
         amount_to_expand_scaled);
 
     anchor.ResetViewportToAnchoredPosition();
   }
 }
 
 void LayerTreeHostImpl::SynchronouslyInitializeAllTiles() {
   // Only valid for the single-threaded non-scheduled/synchronous case
   // using the zero copy raster worker pool.
   single_thread_synchronous_task_graph_runner_->RunUntilIdle();
@@ skipping 2328 matching lines @@
 }
 
 void LayerTreeHostImpl::UpdateScrollSourceInfo(bool is_wheel_scroll) {
   if (is_wheel_scroll)
     has_scrolled_by_wheel_ = true;
   else
     has_scrolled_by_touch_ = true;
 }
 
 }  // namespace cc