Use the solid color detection to create solid layers

cc/resources/picture_pile_base.cc

 // Copyright 2013 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/picture_pile_base.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 31 matching lines @@
 PicturePileBase::PicturePileBase()
     : min_contents_scale_(0),
       background_color_(SkColorSetARGBInline(0, 0, 0, 0)),
       slow_down_raster_scale_factor_for_debug_(0),
       contents_opaque_(false),
       contents_fill_bounds_completely_(false),
       show_debug_picture_borders_(false),
       clear_canvas_with_debug_color_(kDefaultClearCanvasSetting),
       has_any_recordings_(false),
       has_text_(false),
-      is_mask_(false) {
+      is_mask_(false),
+      is_solid_color_(false),
+      solid_color_(SK_ColorTRANSPARENT) {
   tiling_.SetMaxTextureSize(gfx::Size(kBasePictureSize, kBasePictureSize));
   tile_grid_info_.fTileInterval.setEmpty();
   tile_grid_info_.fMargin.setEmpty();
   tile_grid_info_.fOffset.setZero();
 }
 
 PicturePileBase::PicturePileBase(const PicturePileBase* other)
     : picture_map_(other->picture_map_),
       tiling_(other->tiling_),
       recorded_viewport_(other->recorded_viewport_),
       min_contents_scale_(other->min_contents_scale_),
       tile_grid_info_(other->tile_grid_info_),
       background_color_(other->background_color_),
       slow_down_raster_scale_factor_for_debug_(
           other->slow_down_raster_scale_factor_for_debug_),
       contents_opaque_(other->contents_opaque_),
       contents_fill_bounds_completely_(other->contents_fill_bounds_completely_),
       show_debug_picture_borders_(other->show_debug_picture_borders_),
       clear_canvas_with_debug_color_(other->clear_canvas_with_debug_color_),
       has_any_recordings_(other->has_any_recordings_),
       has_text_(other->has_text_),
-      is_mask_(other->is_mask_) {
+      is_mask_(other->is_mask_),
+      is_solid_color_(other->is_solid_color_),
+      solid_color_(other->solid_color_) {
 }
 
 PicturePileBase::~PicturePileBase() {
 }
 
 void PicturePileBase::SetMinContentsScale(float min_contents_scale) {
   DCHECK(min_contents_scale);
   if (min_contents_scale_ == min_contents_scale)
     return;
 
@@ skipping 160 matching lines @@
 const Picture* PicturePileBase::PictureInfo::GetPicture() const {
   return picture_.get();
 }
 
 float PicturePileBase::PictureInfo::GetInvalidationFrequency() const {
   return invalidation_history_.count() /
          static_cast<float>(INVALIDATION_FRAMES_TRACKED);
 }
 
 }  // namespace cc