cc: Optimize decode scheduling for checker-images.

cc/tiles/tile.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/tiles/tile.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 50 matching lines @@
 
   value->SetBoolean("has_resource", draw_info().has_resource());
   value->SetBoolean("is_using_gpu_memory",
                     draw_info().has_resource() || HasRasterTask());
   value->SetInteger("scheduled_priority", scheduled_priority_);
   value->SetBoolean("use_picture_analysis", use_picture_analysis());
   value->SetInteger("gpu_memory_usage",
                     base::saturated_cast<int>(GPUMemoryUsageInBytes()));
 }
 
+void Tile::SetImageAnalysisResult(
+    std::vector<DrawImage> images_to_decode_before_raster,
+    std::vector<sk_sp<const SkImage>> images_to_checker) {
+  DCHECK(!is_image_analysis_performed_)
+      << "Image Analysis for a tile should be performed once only";
+
+  is_image_analysis_performed_ = true;
+  images_to_decode_before_raster_ = std::move(images_to_decode_before_raster);
+  images_to_checker_ = std::move(images_to_checker);
+}
+
 size_t Tile::GPUMemoryUsageInBytes() const {
   if (draw_info_.resource_) {
     // We can use UncheckedSizeInBytes, since the tile size is determined by the
     // compositor.
     return ResourceUtil::UncheckedSizeInBytes<size_t>(
         draw_info_.resource_->size(), draw_info_.resource_->format());
   }
   return 0;
 }
 
 }  // namespace cc