[Android] Adding Smart GO/NEXT feature in Chrome

third_party/WebKit/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 198 matching lines @@
     return false;
   }
 
   // Smooth scroll the root layer to |targetX|, |targetY| in |durationMs|.
   virtual void smoothScroll(int targetX, int targetY, long durationMs) {}
 
   // 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) {}
 
+  // Advance the focus of the WebView to next text input element from current
+  // input field wrt sequential navigation with TAB or Shift + TAB
+  // WebFocusTypeForward simulates TAB and WebFocusTypeBackward simulates
+  // Shift + TAB. (Will be extended to other form Controls like Select element
+  // , Checkbox, Radio etc.)
+  virtual void advanceFocusInForm(WebFocusType focusType) {}

[nasko, 2017/04/25 21:32:45]

Please move this API to WebFrame. Forms are specific to a document, therefore
specific to a frame. 

[AKVT, 2017/04/26 10:33:04]

Done.

+
   // Advance the focus from the frame |from| to the next in sequence
   // (determined by WebFocusType) focusable element in frame |to|. Used when
   // focus needs to advance to/from a cross-process frame.
   virtual void advanceFocusAcrossFrames(WebFocusType,
                                         WebRemoteFrame* from,
                                         WebLocalFrame* to) {}
 
   // 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 270 matching lines @@
   // completed.
   WebWidget* widget() { return this; }
 
  protected:
   ~WebView() {}
 };
 
 }  // namespace blink
 
 #endif