Adding support for Smart GO NEXT feature in Android Chrome

public/web/WebView.h

Index: public/web/WebView.h
diff --git a/public/web/WebView.h b/public/web/WebView.h
index 9f564ecebeb970cb39c705fa73652de7aeffb902..5fe1ae1cbc09f34edbf65d81ac5429c56bf57435 100644
--- a/public/web/WebView.h
+++ b/public/web/WebView.h
@@ -33,6 +33,7 @@
 
 #include "../platform/WebColor.h"
 #include "../platform/WebDisplayMode.h"
+#include "../platform/WebFocusType.h"
 #include "../platform/WebPageVisibilityState.h"
 #include "../platform/WebString.h"
 #include "../platform/WebVector.h"
@@ -179,6 +180,12 @@ public:
     // 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 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) {}
+
     // 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) { }