[Android] Adding Smart GO/NEXT feature in Chrome

third_party/WebKit/Source/core/editing/InputMethodController.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 27 matching lines @@
 #include "core/editing/state_machines/BackwardCodePointStateMachine.h"
 #include "core/editing/state_machines/ForwardCodePointStateMachine.h"
 #include "core/events/CompositionEvent.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLTextAreaElement.h"
 #include "core/input/EventHandler.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutTheme.h"
 #include "core/page/ChromeClient.h"
+#include "core/page/FocusController.h"
+#include "core/page/Page.h"
 
 namespace blink {
 
 namespace {
 
 void DispatchCompositionUpdateEvent(LocalFrame& frame, const String& text) {
   Element* target = frame.GetDocument()->FocusedElement();
   if (!target)
     return;
 
@@ skipping 1069 matching lines @@
         flags |= kWebTextInputFlagAutocapitalizeCharacters;
       else if (autocapitalize == words)
         flags |= kWebTextInputFlagAutocapitalizeWords;
       else if (autocapitalize == sentences)
         flags |= kWebTextInputFlagAutocapitalizeSentences;
       else
         NOTREACHED();
     }
   }
 
+  if (GetDocument().GetPage()->GetFocusController().NextFocusableElementInForm(
+          element, kWebFocusTypeForward))
+    flags |= kWebTextInputFlagHaveNextFocusableElement;
+
+  if (GetDocument().GetPage()->GetFocusController().NextFocusableElementInForm(
+          element, kWebFocusTypeBackward))
+    flags |= kWebTextInputFlagHavePreviousFocusableElement;
+
   return flags;
 }
 
 WebTextInputMode InputMethodController::InputModeOfFocusedElement() const {
   if (!RuntimeEnabledFeatures::InputModeAttributeEnabled())
     return kWebTextInputModeDefault;
 
   AtomicString mode = GetInputModeAttribute(GetDocument().FocusedElement());
 
   if (mode.IsEmpty())
@@ skipping 91 matching lines @@
   FinishComposingText(kKeepSelection);
 }
 
 DEFINE_TRACE(InputMethodController) {
   visitor->Trace(frame_);
   visitor->Trace(composition_range_);
   SynchronousMutationObserver::Trace(visitor);
 }
 
 }  // namespace blink