[Android] Adding Smart GO/NEXT feature in Chrome

third_party/WebKit/public/web/WebLocalFrame.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebLocalFrame_h
 #define WebLocalFrame_h
 
 #include <set>
 #include "WebCompositionUnderline.h"
 #include "WebFrame.h"
 #include "WebFrameLoadType.h"
 #include "WebHistoryItem.h"
 #include "public/platform/WebCachePolicy.h"
+#include "public/platform/WebFocusType.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebURLRequest.h"
 #include "public/platform/site_engagement.mojom-shared.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace blink {
 
@@ skipping 588 matching lines @@
 
   // Creates and returns a loader. This function can be called only when this
   // frame is attached to a document.
   virtual std::unique_ptr<WebURLLoader> CreateURLLoader() = 0;
 
   // Geometry -----------------------------------------------------------------
 
   // If set to false, do not draw scrollbars on this frame's view.
   virtual void SetCanHaveScrollbars(bool) = 0;
 
+  // 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) = 0;
+
   // Testing ------------------------------------------------------------------
 
   // Dumps the layer tree, used by the accelerated compositor, in
   // text form. This is used only by layout tests.
   virtual WebString GetLayerTreeAsTextForTesting(
       bool show_debug_info = false) const = 0;
 
  protected:
   explicit WebLocalFrame(WebTreeScopeType scope) : WebFrame(scope) {}
 
   // Inherited from WebFrame, but intentionally hidden: it never makes sense
   // to call these on a WebLocalFrame.
   bool IsWebLocalFrame() const override = 0;
   WebLocalFrame* ToWebLocalFrame() override = 0;
   bool IsWebRemoteFrame() const override = 0;
   WebRemoteFrame* ToWebRemoteFrame() override = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebLocalFrame_h