Adding support for Smart GO NEXT feature in Android Chrome

public/web/WebView.h

 /*
  * Copyright (C) 2009, 2010, 2011, 2012 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 166 matching lines @@
 
     // Clears the focused element (and selection if a text field is focused)
     // to ensure that a text field on the page is not eating keystrokes we
     // send it.
     virtual void clearFocusedElement() = 0;
 
     // Scrolls the node currently in focus into |rect|, where |rect| is in
     // window space.
     virtual void scrollFocusedNodeIntoRect(const WebRect&) { }
 
+    // Advance the focus of the WebView to next text input element from current
+    // by following the direction (forward/backward).
+    virtual void advanceFocusToNextInputField(bool direction) { }

[bcwhite, 2015/02/24 17:06:23]

"direction" doesn't clearly define which matches "true" and which matches
"false".  Perhaps "forward" or "backward"?

[yosin_UTC9, 2015/02/25 01:25:36]

Please considering use |WebFocusType| enum for representing direction related to
focus.

[AKV, 2015/04/08 18:38:12]

Done. Thanks

[AKV, 2015/04/08 18:38:12]

Done. Thanks

+
     // Advance the focus of the WebView forward to the next element or to the
     // previous element in the tab sequence (if reverse is true).
     virtual void advanceFocus(bool reverse) { }
 
     // Animate a scale into the specified find-in-page rect.
     virtual void zoomToFindInPageRect(const WebRect&) = 0;
 
     // Animate a scale into the specified rect where multiple targets were
     // found from previous tap gesture.
     // Returns false if it doesn't do any zooming.
@@ skipping 291 matching lines @@
 
     // Testing functionality for TestRunner ---------------------------------
 
 protected:
     ~WebView() {}
 };
 
 } // namespace blink
 
 #endif