Tweak priorities of paint invalidation reasons

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PaintInvalidationReason_h
 #define PaintInvalidationReason_h
 
 #include "platform/PlatformExport.h"
 
 namespace blink {
 
 enum PaintInvalidationReason {
     PaintInvalidationNone,
+    PaintInvalidationProbablyNone,
     PaintInvalidationIncremental,
     PaintInvalidationRectangle,
     // The following reasons will all cause full invalidation of the LayoutObject.
     PaintInvalidationFull, // Any unspecified reason of full invalidation.
     PaintInvalidationStyleChange,
     PaintInvalidationForcedByLayout,
     PaintInvalidationCompositingUpdate,
     PaintInvalidationBorderBoxChange,
     PaintInvalidationContentBoxChange,
     PaintInvalidationLayoutOverflowBoxChange,
@@ skipping 17 matching lines @@
     PaintInvalidationReasonMax = PaintInvalidationDelayedFull
 };
 
 PLATFORM_EXPORT const char* paintInvalidationReasonToString(PaintInvalidationReason);
 
 inline bool isFullPaintInvalidationReason(PaintInvalidationReason reason)
 {
     return reason >= PaintInvalidationFull;
 }
 
+inline bool isImmediateFullPaintInvalidationReason(PaintInvalidationReason reason)
+{
+    return isFullPaintInvalidationReason(reason) && reason != PaintInvalidationDelayedFull;
+}
+
 } // namespace blink
 
 #endif // PaintInvalidationReason_h