Don't free non-tile resources on GPU rasterization toggle

cc/layers/layer_impl.cc

 // Copyright 2012 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/layers/layer_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 840 matching lines @@
 SimpleEnclosedRegion LayerImpl::VisibleOpaqueRegion() const {
   if (contents_opaque())
     return SimpleEnclosedRegion(visible_layer_rect());
   return SimpleEnclosedRegion();
 }
 
 void LayerImpl::DidBeginTracing() {}
 
 void LayerImpl::ReleaseResources() {}
 
-void LayerImpl::RecreateResources() {
-}
+void LayerImpl::ReleaseTileResources() {}
+
+void LayerImpl::RecreateTileResources() {}
 
 gfx::ScrollOffset LayerImpl::MaxScrollOffset() const {
   return layer_tree_impl()->property_trees()->scroll_tree.MaxScrollOffset(
       scroll_tree_index());
 }
 
 gfx::ScrollOffset LayerImpl::ClampScrollOffsetToLimits(
     gfx::ScrollOffset offset) const {
   offset.SetToMin(MaxScrollOffset());
   offset.SetToMax(gfx::ScrollOffset());
@@ skipping 215 matching lines @@
            .layer_transforms_should_scale_layer_contents) {
     return default_scale;
   }
 
   gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents(
       ScreenSpaceTransform(), default_scale);
   return std::max(transform_scales.x(), transform_scales.y());
 }
 
 }  // namespace cc