Make CompositingReasonFinder::requiresCompositingForAnimation take RenderStyle*

Source/core/rendering/compositing/CompositingReasonFinder.cpp

Index: Source/core/rendering/compositing/CompositingReasonFinder.cpp
diff --git a/Source/core/rendering/compositing/CompositingReasonFinder.cpp b/Source/core/rendering/compositing/CompositingReasonFinder.cpp
index 4eeca79afea82c6e1f5012f1bcd92344da58e867..3c87a3eda72aeeb599e7d049ce52d802f8c361f5 100644
--- a/Source/core/rendering/compositing/CompositingReasonFinder.cpp
+++ b/Source/core/rendering/compositing/CompositingReasonFinder.cpp
@@ -110,7 +110,7 @@ CompositingReasons CompositingReasonFinder::styleDeterminedReasons(RenderObject*
     if (style->backfaceVisibility() == BackfaceVisibilityHidden)
         directReasons |= CompositingReasonBackfaceVisibilityHidden;
 
-    if (requiresCompositingForAnimation(renderer))
+    if (requiresCompositingForAnimation(renderer->style()))

[abarth-chromium, 2014/06/06 18:10:53]

There's already a |style| local variable in this function you can use.

[ajuma, 2014/06/06 18:13:31]

Done.

         directReasons |= CompositingReasonActiveAnimation;
 
     if (style->hasWillChangeCompositingHint() && !style->subtreeWillChangeContents())
@@ -166,12 +166,12 @@ CompositingReasons CompositingReasonFinder::nonStyleDeterminedDirectReasons(cons
     return directReasons;
 }
 
-bool CompositingReasonFinder::requiresCompositingForAnimation(RenderObject* renderer) const
+bool CompositingReasonFinder::requiresCompositingForAnimation(RenderStyle* style) const
 {
-    if (renderer->style()->subtreeWillChangeContents())
-        return renderer->style()->isRunningAnimationOnCompositor();
+    if (style->subtreeWillChangeContents())
+        return style->isRunningAnimationOnCompositor();
 
-    return renderer->style()->shouldCompositeForCurrentAnimations();
+    return style->shouldCompositeForCurrentAnimations();
 }
 
 bool CompositingReasonFinder::requiresCompositingForPosition(RenderObject* renderer, const RenderLayer* layer, RenderLayer::ViewportConstrainedNotCompositedReason* viewportConstrainedNotCompositedReason) const