Raster: Allow a RasterSource to specify its color space

cc/tiles/tile_manager.cc

Index: cc/tiles/tile_manager.cc
diff --git a/cc/tiles/tile_manager.cc b/cc/tiles/tile_manager.cc
index 9429510793ed313dac531fe45ec0e725dca0d95e..b8bdcb16615285b7c99e05a93041950146f5eb37 100644
--- a/cc/tiles/tile_manager.cc
+++ b/cc/tiles/tile_manager.cc
@@ -826,7 +826,7 @@ void TileManager::ScheduleTasks(
 
   graph_.Reset();
 
-  gfx::ColorSpace color_space = client_->GetTileColorSpace();
+  gfx::ColorSpace target_color_space = client_->GetTileColorSpace();
 
   scoped_refptr<TileTask> required_for_activation_done_task =
       CreateTaskSetFinishedTask(
@@ -846,7 +846,11 @@ void TileManager::ScheduleTasks(
     DCHECK(!tile->draw_info().resource_);
 
     if (!tile->raster_task_)
-      tile->raster_task_ = CreateRasterTask(prioritized_tile, color_space);
+      tile->raster_task_ = CreateRasterTask(
+          prioritized_tile,
+          prioritized_tile.raster_source()->HasImpliedColorSpace()
+              ? prioritized_tile.raster_source()->GetImpliedColorSpace()
+              : target_color_space);
 
     TileTask* task = tile->raster_task_.get();