[Android] Adding Smart GO/NEXT feature in Chrome

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 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 2504 matching lines @@
     clipHtml =
         createMarkup(startPosition, endPosition, AnnotateForInterchange,
                      ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
   } else {
     clipHtml =
         createMarkup(endPosition, startPosition, AnnotateForInterchange,
                      ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
   }
 }
 
+void WebLocalFrameImpl::advanceFocusInForm(WebFocusType focusType) {
+  if (!frame()->document())
+    return;
+
+  Element* element = frame()->document()->focusedElement();
+  if (!element)
+    return;
+
+  Element* nextElement =
+      frame()->inputMethodController().nextFocusableElementInForm(
+          element, focusType);
+  if (!nextElement)
+    return;
+
+  nextElement->scrollIntoViewIfNeeded(true /*centerIfNeeded*/);
+  nextElement->focus();
+}
+
 TextCheckerClient& WebLocalFrameImpl::textCheckerClient() const {
   return *m_textCheckerClient;
 }
 
 void WebLocalFrameImpl::setTextCheckClient(
     WebTextCheckClient* textCheckClient) {
   m_textCheckClient = textCheckClient;
 }
 
 }  // namespace blink