Don't cache reflection drawings

Source/platform/graphics/paint/DisplayItemCacheSkipper.h

Index: Source/platform/graphics/paint/DisplayItemCacheSkipper.h
diff --git a/Source/platform/graphics/paint/DisplayItemCacheSkipper.h b/Source/platform/graphics/paint/DisplayItemCacheSkipper.h
new file mode 100644
index 0000000000000000000000000000000000000000..b8d24fd1a7077eff32e32496f026a86b5fd1c76c
--- /dev/null
+++ b/Source/platform/graphics/paint/DisplayItemCacheSkipper.h
@@ -0,0 +1,34 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DisplayItemCacheSkipper_h
+#define DisplayItemCacheSkipper_h
+
+#include "platform/RuntimeEnabledFeatures.h"
+#include "platform/graphics/GraphicsContext.h"
+#include "platform/graphics/paint/DisplayItemList.h"
+
+namespace blink {
+
+class DisplayItemCacheSkipper {
+public:
+    DisplayItemCacheSkipper(GraphicsContext& context)
+        : m_context(context)
+    {
+        if (RuntimeEnabledFeatures::slimmingPaintEnabled())
+            context.displayItemList()->beginSkippingCache();
+    }
+    ~DisplayItemCacheSkipper()
+    {
+        if (RuntimeEnabledFeatures::slimmingPaintEnabled())
+            m_context.displayItemList()->endSkippingCache();
+    }
+
+private:
+    GraphicsContext& m_context;
+};
+
+} // namespace blink
+
+#endif // DisplayItemCacheSkipper_h