Tweak priorities of paint invalidation reasons

third_party/WebKit/Source/platform/graphics/PaintInvalidationReason.h

Index: third_party/WebKit/Source/platform/graphics/PaintInvalidationReason.h
diff --git a/third_party/WebKit/Source/platform/graphics/PaintInvalidationReason.h b/third_party/WebKit/Source/platform/graphics/PaintInvalidationReason.h
index d998991b305185d4a188290e889ebd2944256906..508e43932cb0c7f4a9ec44c6d0270e742283058a 100644
--- a/third_party/WebKit/Source/platform/graphics/PaintInvalidationReason.h
+++ b/third_party/WebKit/Source/platform/graphics/PaintInvalidationReason.h
@@ -11,6 +11,7 @@ namespace blink {
 
 enum PaintInvalidationReason {
     PaintInvalidationNone,
+    PaintInvalidationProbablyNone,
     PaintInvalidationIncremental,
     PaintInvalidationRectangle,
     // The following reasons will all cause full invalidation of the LayoutObject.
@@ -48,6 +49,11 @@ inline bool isFullPaintInvalidationReason(PaintInvalidationReason reason)
     return reason >= PaintInvalidationFull;
 }
 
+inline bool isImmediateFullPaintInvalidationReason(PaintInvalidationReason reason)
+{
+    return isFullPaintInvalidationReason(reason) && reason != PaintInvalidationDelayedFull;
+}
+
 } // namespace blink
 
 #endif // PaintInvalidationReason_h