cc: Make raster source members const

cc/resources/display_list_recording_source.cc

 // Copyright 2014 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/resources/display_list_recording_source.h"
 
 #include <algorithm>
 
 #include "cc/base/region.h"
 #include "cc/layers/content_layer_client.h"
@@ skipping 11 matching lines @@
 // operations.
 const int kOpCountThatIsOkToAnalyze = 10;
 
 }  // namespace
 
 namespace cc {
 
 DisplayListRecordingSource::DisplayListRecordingSource()
     : slow_down_raster_scale_factor_for_debug_(0),
       can_use_lcd_text_(true),
+      requires_clear_(false),
       is_solid_color_(false),
       solid_color_(SK_ColorTRANSPARENT),
+      background_color_(SK_ColorTRANSPARENT),
       pixel_record_distance_(kPixelDistanceToRecord),
       is_suitable_for_gpu_rasterization_(true) {
 }
 
 DisplayListRecordingSource::~DisplayListRecordingSource() {
 }
 
 bool DisplayListRecordingSource::UpdateAndExpandInvalidation(
     ContentLayerClient* painter,
     Region* invalidation,
@@ skipping 83 matching lines @@
 
 void DisplayListRecordingSource::SetEmptyBounds() {
   size_ = gfx::Size();
   Clear();
 }
 
 void DisplayListRecordingSource::SetSlowdownRasterScaleFactor(int factor) {
   slow_down_raster_scale_factor_for_debug_ = factor;
 }
 
+void DisplayListRecordingSource::SetBackgroundColor(SkColor background_color) {
+  background_color_ = background_color;
+}
+
+void DisplayListRecordingSource::SetRequiresClear(bool requires_clear) {
+  requires_clear_ = requires_clear;
+}
+
 void DisplayListRecordingSource::SetUnsuitableForGpuRasterizationForTesting() {
   is_suitable_for_gpu_rasterization_ = false;
 }
 
 bool DisplayListRecordingSource::IsSuitableForGpuRasterization() const {
   return is_suitable_for_gpu_rasterization_;
 }
 
 scoped_refptr<RasterSource> DisplayListRecordingSource::CreateRasterSource()
     const {
@@ skipping 19 matching lines @@
   is_solid_color_ = canvas.GetColorIfSolid(&solid_color_);
 }
 
 void DisplayListRecordingSource::Clear() {
   recorded_viewport_ = gfx::Rect();
   display_list_ = NULL;
   is_solid_color_ = false;
 }
 
 }  // namespace cc