Add paint testing mode subsequence_caching_disabled

cc/blink/web_content_layer_impl.cc

Index: cc/blink/web_content_layer_impl.cc
diff --git a/cc/blink/web_content_layer_impl.cc b/cc/blink/web_content_layer_impl.cc
index 6f7b66c29bba47510e26e028bef1de77bf8698d1..5e4e744f18ba84b02ad08ad677f4c3c2db35ed98 100644
--- a/cc/blink/web_content_layer_impl.cc
+++ b/cc/blink/web_content_layer_impl.cc
@@ -40,6 +40,8 @@ PaintingControlToWeb(
       return blink::WebContentLayerClient::DisplayListCachingDisabled;
     case cc::ContentLayerClient::DISPLAY_LIST_PAINTING_DISABLED:
       return blink::WebContentLayerClient::DisplayListPaintingDisabled;
+    case cc::ContentLayerClient::SUBSEQUENCE_CACHING_DISABLED:
+      return blink::WebContentLayerClient::SubsequenceCachingDisabled;
   }
   NOTREACHED();
   return blink::WebContentLayerClient::PaintDefaultBehavior;