Skip rule matching during animations.

Source/core/animation/ActiveAnimations.cpp

Index: Source/core/animation/ActiveAnimations.cpp
diff --git a/Source/core/animation/ActiveAnimations.cpp b/Source/core/animation/ActiveAnimations.cpp
index 586de09c0a5368685d59bb9d04f755fa34cc107a..02a1a78f6388ee10898a72b0b459a43fee3ddee3 100644
--- a/Source/core/animation/ActiveAnimations.cpp
+++ b/Source/core/animation/ActiveAnimations.cpp
@@ -35,6 +35,11 @@
 
 namespace blink {
 
+ActiveAnimations::ActiveAnimations()
+    : m_animationStyleChange(false)
+{
+}
+
 ActiveAnimations::~ActiveAnimations()
 {
 #if !ENABLE(OILPAN)
@@ -85,4 +90,13 @@ void ActiveAnimations::trace(Visitor* visitor)
 #endif
 }
 
+void ActiveAnimations::setBaseRenderStyle(PassRefPtr<RenderStyle> renderStyle)
+{
+#if ENABLE(ASSERT)
+    if (m_baseRenderStyle && renderStyle)
+        ASSERT(*m_baseRenderStyle == *renderStyle);
+#endif
+    m_baseRenderStyle = renderStyle;
+}
+
 } // namespace blink