Move overscroll logic out of EventHandler.

third_party/WebKit/Source/core/frame/FrameHost.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 29 matching lines @@
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class ChromeClient;
 class ConsoleMessageStorage;
 class Deprecation;
 class EventHandlerRegistry;
+class OverscrollController;
 class Page;
 class PageScaleConstraintsSet;
 class Settings;
 class UseCounter;
 class Visitor;
 
 // FrameHost is the set of global data shared between multiple frames
 // and is provided by the embedder to each frame when created.
 // FrameHost currently corresponds to the Page object in core/page
 // however the concept of a Page is moving up out of Blink.
@@ skipping 14 matching lines @@
     ChromeClient& chromeClient() const;
     UseCounter& useCounter() const;
     Deprecation& deprecation() const;
 
     // Corresponds to pixel density of the device where this Page is
     // being displayed. In multi-monitor setups this can vary between pages.
     // This value does not account for Page zoom, use LocalFrame::devicePixelRatio instead.
     float deviceScaleFactor() const;
 
     TopControls& topControls() const;
+    OverscrollController& overscrollController() const;
     VisualViewport& visualViewport() const;
     PageScaleConstraintsSet& pageScaleConstraintsSet() const;
     EventHandlerRegistry& eventHandlerRegistry() const;
 
     const AtomicString& overrideEncoding() const { return m_overrideEncoding; }
     void setOverrideEncoding(const AtomicString& encoding) { m_overrideEncoding = encoding; }
 
     ConsoleMessageStorage& consoleMessageStorage() const;
 
     DECLARE_TRACE();
@@ skipping 10 matching lines @@
     void setDefaultPageScaleLimits(float minScale, float maxScale);
     void setUserAgentPageScaleConstraints(PageScaleConstraints newConstraints);
 
 private:
     explicit FrameHost(Page&);
 
     Member<Page> m_page;
     const Member<TopControls> m_topControls;
     const OwnPtr<PageScaleConstraintsSet> m_pageScaleConstraintsSet;
     const Member<VisualViewport> m_visualViewport;
+    const Member<OverscrollController> m_overscrollController;
     const Member<EventHandlerRegistry> m_eventHandlerRegistry;
     const Member<ConsoleMessageStorage> m_consoleMessageStorage;
 
     AtomicString m_overrideEncoding;
     int m_subframeCount;
 };
 
 } // namespace blink
 
 #endif // FrameHost_h