cc: Add UMA for tracking decode duration for out of raster decodes.

cc/tiles/checker_image_tracker_unittest.cc

Index: cc/tiles/checker_image_tracker_unittest.cc
diff --git a/cc/tiles/checker_image_tracker_unittest.cc b/cc/tiles/checker_image_tracker_unittest.cc
index 38de60dfd80b7797c99004c3e25dd0edc453157a..fd725a6746b7e77922c4c8c2ae0c675f8234e808 100644
--- a/cc/tiles/checker_image_tracker_unittest.cc
+++ b/cc/tiles/checker_image_tracker_unittest.cc
@@ -47,7 +47,8 @@ class TestImageController : public ImageController {
 
   ImageDecodeRequestId QueueImageDecode(
       sk_sp<const SkImage> image,
-      const ImageDecodedCallback& callback) override {
+      const ImageDecodedCallback& callback,
+      ImageDecodeCache::ImageDecodeType type) override {
     ImageDecodeRequestId request_id = next_image_request_id_++;
 
     decodes_requested_.insert(image->uniqueID());