Store recording invalidations in DisplayListRecordingSource, save them via Update.

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 <utility>
@@ skipping 1566 matching lines @@
 }
 
 void LayerImpl::SetForceRenderSurface(bool force_render_surface) {
   if (force_render_surface == force_render_surface_)
     return;
 
   force_render_surface_ = force_render_surface;
   NoteLayerPropertyChanged();
 }
 
-Region LayerImpl::GetInvalidationRegion() {
+Region LayerImpl::GetInvalidationRegionForDebugging() {
   return Region(update_rect_);
 }
 
 gfx::Rect LayerImpl::GetEnclosingRectInTargetSpace() const {
   return MathUtil::MapEnclosingClippedRect(DrawTransform(),
                                            gfx::Rect(bounds()));
 }
 
 gfx::Rect LayerImpl::GetScaledEnclosingRectInTargetSpace(float scale) const {
   gfx::Transform scaled_draw_transform = DrawTransform();
@@ skipping 21 matching lines @@
            .layer_transforms_should_scale_layer_contents) {
     return default_scale;
   }
 
   gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents(
       DrawTransform(), default_scale);
   return std::max(transform_scales.x(), transform_scales.y());
 }
 
 }  // namespace cc