| Index: third_party/WebKit/Source/platform/graphics/paint/PaintController.h | 
| diff --git a/third_party/WebKit/Source/platform/graphics/paint/PaintController.h b/third_party/WebKit/Source/platform/graphics/paint/PaintController.h | 
| index 3b30f26e20ed318845dbcc51fe5eea053a15d5fa..c81289a0c287359718e7b10e820554c927916bbc 100644 | 
| --- a/third_party/WebKit/Source/platform/graphics/paint/PaintController.h | 
| +++ b/third_party/WebKit/Source/platform/graphics/paint/PaintController.h | 
| @@ -121,6 +121,7 @@ public: | 
| const Vector<PaintChunk>& paintChunks() const { return paintArtifact().paintChunks(); } | 
|  | 
| bool clientCacheIsValid(DisplayItemClient) const; | 
| +    bool cacheIsEmpty() const { return m_currentPaintArtifact.isEmpty(); } | 
|  | 
| bool displayItemConstructionIsDisabled() const { return m_constructionDisabled; } | 
| void setDisplayItemConstructionIsDisabled(const bool disable) { m_constructionDisabled = disable; } | 
|  |