Made Blink aware of top controls offset (Blink-side)

Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 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 92 matching lines @@
     virtual void paint(WebCanvas*, const WebRect&) OVERRIDE;
 #if OS(ANDROID)
     virtual void paintCompositedDeprecated(WebCanvas*, const WebRect&) OVERRIDE;
 #endif
     virtual void compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback*) OVERRIDE;
     virtual bool isTrackingRepaints() const OVERRIDE;
     virtual void themeChanged() OVERRIDE;
     virtual bool handleInputEvent(const WebInputEvent&) OVERRIDE;
     virtual void setCursorVisibilityState(bool isVisible) OVERRIDE;
     virtual bool hasTouchEventHandlersAt(const WebPoint&) OVERRIDE;
-    virtual void applyScrollAndScale(const WebSize&, float) OVERRIDE;
+    virtual void applyViewportDeltas(
+        const WebSize& scrollDelta,
+        float pageScaleDelta,
+        float topControlsDelta) OVERRIDE;
     virtual void mouseCaptureLost() OVERRIDE;
     virtual void setFocus(bool enable) OVERRIDE;
     virtual bool setComposition(
         const WebString& text,
         const WebVector<WebCompositionUnderline>& underlines,
         int selectionStart,
         int selectionEnd) OVERRIDE;
     virtual bool confirmComposition() OVERRIDE;
     virtual bool confirmComposition(ConfirmCompositionBehavior selectionBehavior) OVERRIDE;
     virtual bool confirmComposition(const WebString& text) OVERRIDE;
@@ skipping 356 matching lines @@
     // Exposed for tests.
     WebVector<WebCompositionUnderline> compositionUnderlines() const;
 
     WebLayerTreeView* layerTreeView() const { return m_layerTreeView; }
 
     bool pinchVirtualViewportEnabled() const;
 
     bool matchesHeuristicsForGpuRasterizationForTesting() const { return m_matchesHeuristicsForGpuRasterization; }
 
 private:
+    void setTopControlsContentOffset(float);
+
     // TODO(bokan): Remains for legacy pinch. Remove once it's gone. Made private to
     // prevent external usage
     virtual void setPageScaleFactor(float scaleFactor, const WebPoint& origin) OVERRIDE;
 
     float legibleScale() const;
     void refreshPageScaleFactorAfterLayout();
     void resumeTreeViewCommits();
     void setUserAgentPageScaleConstraints(PageScaleConstraints newConstraints);
     float clampPageScaleFactorToLimits(float) const;
     IntSize contentsSize() const;
@@ skipping 207 matching lines @@
     bool m_showFPSCounter;
     bool m_showPaintRects;
     bool m_showDebugBorders;
     bool m_continuousPaintingEnabled;
     bool m_showScrollBottleneckRects;
     WebColor m_baseBackgroundColor;
     WebColor m_backgroundColorOverride;
     float m_zoomFactorOverride;
 
     bool m_userGestureObserved;
+    float m_topControlsContentOffset;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif