Refactor Scroll Customization to share cc::ScrollStateData with blink.

third_party/WebKit/Source/platform/scroll/ScrollStateData.h

Index: third_party/WebKit/Source/platform/scroll/ScrollStateData.h
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollStateData.h b/third_party/WebKit/Source/platform/scroll/ScrollStateData.h
new file mode 100644
index 0000000000000000000000000000000000000000..07e7ebd644cffe2804b42e353ceee2c2846944df
--- /dev/null
+++ b/third_party/WebKit/Source/platform/scroll/ScrollStateData.h
@@ -0,0 +1,22 @@
+// Copyright 2016 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 ScrollStateData_h
+#define ScrollStateData_h
+
+#include "cc/input/scroll_state.h"
+
+namespace blink {
+
+// A wrapper around cc's structure to expose it to core.
+struct ScrollStateData : public cc::ScrollStateData {
+    ScrollStateData()
+        : cc::ScrollStateData()
+    {
+    }
+};
+
+} // namespace blink
+
+#endif