[S.P.] Don't draw frames of animated images that are offscreen

Source/platform/graphics/PaintInvalidationReason.cpp

Index: Source/platform/graphics/PaintInvalidationReason.cpp
diff --git a/Source/platform/graphics/PaintInvalidationReason.cpp b/Source/platform/graphics/PaintInvalidationReason.cpp
index f43a153221a3e95adf07519cca662486799cf743..b5dbdad8011efd43e7d3e3a7e2181d0b2ed1afc8 100644
--- a/Source/platform/graphics/PaintInvalidationReason.cpp
+++ b/Source/platform/graphics/PaintInvalidationReason.cpp
@@ -46,6 +46,8 @@ const char* paintInvalidationReasonToString(PaintInvalidationReason reason)
         return "renderer insertion";
     case PaintInvalidationRendererRemoval:
         return "renderer removal";
+    case PaintInvalidationDelayedFull:
+        return "delayed full";
     }
     ASSERT_NOT_REACHED();
     return "";