cc: Optimize decode scheduling for checker-images.

cc/tiles/tile.cc

Index: cc/tiles/tile.cc
diff --git a/cc/tiles/tile.cc b/cc/tiles/tile.cc
index b43383fd68bdb70d03ac717e0204c92e44f49974..c6f0b896d7cd88086928438ac62fd2ec23a9d064 100644
--- a/cc/tiles/tile.cc
+++ b/cc/tiles/tile.cc
@@ -68,6 +68,17 @@ void Tile::AsValueInto(base::trace_event::TracedValue* value) const {
                     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