Skip paint property update and visual rect update if no geometry change

third_party/WebKit/Source/core/paint/PaintInvalidator.h

Index: third_party/WebKit/Source/core/paint/PaintInvalidator.h
diff --git a/third_party/WebKit/Source/core/paint/PaintInvalidator.h b/third_party/WebKit/Source/core/paint/PaintInvalidator.h
index ddb0a2d33fa72c0385ea9a6c8c148e8a96dcf775..d261934e841c1a3aef648f59e02323d0ec36b448 100644
--- a/third_party/WebKit/Source/core/paint/PaintInvalidator.h
+++ b/third_party/WebKit/Source/core/paint/PaintInvalidator.h
@@ -44,7 +44,7 @@ struct PaintInvalidatorContext {
 
   enum ForcedSubtreeInvalidationFlag {
     ForcedSubtreeInvalidationChecking = 1 << 0,
-    ForcedSubtreeInvalidationRectUpdate = 1 << 1,
+    ForcedSubtreeVisualRectUpdate = 1 << 1,
     ForcedSubtreeFullInvalidation = 1 << 2,
     ForcedSubtreeFullInvalidationForStackedContents = 1 << 3,
     ForcedSubtreeSVGResourceChange = 1 << 4,
@@ -98,6 +98,9 @@ class PaintInvalidator {
   // See the definition of PaintInvalidationDelayedFull for more details.
   void processPendingDelayedPaintInvalidations();
 
+  bool needsVisualRectUpdate(const LayoutObject&,
+                             const PaintInvalidatorContext&);
+
  private:
   ALWAYS_INLINE LayoutRect
   computeVisualRectInBacking(const LayoutObject&,
@@ -108,6 +111,8 @@ class PaintInvalidator {
                                          PaintInvalidatorContext&);
   ALWAYS_INLINE void updatePaintInvalidationContainer(const LayoutObject&,
                                                       PaintInvalidatorContext&);
+  ALWAYS_INLINE void updateVisualRectIfNeeded(const LayoutObject&,
+                                              PaintInvalidatorContext&);
   ALWAYS_INLINE void updateVisualRect(const LayoutObject&,
                                       PaintInvalidatorContext&);