Optimize ClipRects in the PrePaintTreeWalk

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

Index: third_party/WebKit/Source/core/paint/PrePaintTreeWalk.h
diff --git a/third_party/WebKit/Source/core/paint/PrePaintTreeWalk.h b/third_party/WebKit/Source/core/paint/PrePaintTreeWalk.h
index 81d0f09145ec4c084960c1372167ce124b092579..a45884e9ccc098c910ae44fdab06943b2b98b5ab 100644
--- a/third_party/WebKit/Source/core/paint/PrePaintTreeWalk.h
+++ b/third_party/WebKit/Source/core/paint/PrePaintTreeWalk.h
@@ -31,18 +31,18 @@ class PrePaintTreeWalk {
 
   // Invalidates paint-layer painting optimizations, such as subsequence caching
   // and empty paint phase optimizations if clips from the context have changed.
-  void invalidatePaintLayerOptimizationsIfNeeded(const LayoutObject&,
-                                                 PrePaintTreeWalkContext&);
+  ALWAYS_INLINE void invalidatePaintLayerOptimizationsIfNeeded(
+      const LayoutObject&,
+      PrePaintTreeWalkContext&);
 
   // Returns in |clipRect| the clip applied to children for the given
   // contaiing block context + effect, in the space of ancestorState adjusted
   // by ancestorPaintOffset. Sets hasClip to true if a clip was applied.

[Xianzhu, 2017/04/03 16:30:15]

Remove the sentence about 'hasClip'.

[chrishtr, 2017/04/03 16:36:42]

Done.

-  void computeClipRectForContext(
+  ALWAYS_INLINE void computeClipRectForContext(
       const PaintPropertyTreeBuilderContext::ContainingBlockContext&,
       const EffectPaintPropertyNode*,
       const PropertyTreeState& ancestorState,
       const LayoutPoint& ancestorPaintOffset,
-      bool& hasClip,
       FloatClipRect&);
 
   bool ALWAYS_INLINE