PurgeMemory.

third_party/WebKit/Source/core/css/StylePropertySet.cpp

Index: third_party/WebKit/Source/core/css/StylePropertySet.cpp
diff --git a/third_party/WebKit/Source/core/css/StylePropertySet.cpp b/third_party/WebKit/Source/core/css/StylePropertySet.cpp
index 04da3ec817a457dbd5b40ff50f6c7899b34ec82f..adbe70eea9558e1f838fc760cf76cbf247677921 100644
--- a/third_party/WebKit/Source/core/css/StylePropertySet.cpp
+++ b/third_party/WebKit/Source/core/css/StylePropertySet.cpp
@@ -590,4 +590,10 @@ PassRefPtrWillBeRawPtr<MutableStylePropertySet> MutableStylePropertySet::create(
     return adoptRefWillBeNoop(new MutableStylePropertySet(properties, count));
 }
 
+void StylePropertySet::purgeMemory()
+{
+    for (unsigned i = 0; i < propertyCount(); i++)
+        propertyAt(i).value()->purgeMemory();
+}
+
 } // namespace blink