[Android] Relanding Smart GO NEXT feature in Android Chrome 2/2

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

Index: third_party/WebKit/Source/core/editing/InputMethodController.cpp
diff --git a/third_party/WebKit/Source/core/editing/InputMethodController.cpp b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
index c4e039d5220e16740a7d5bc8ae5457bf5c888c2d..41194054de3110a1ae5bfe1398fbf0a6332b955e 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodController.cpp
+++ b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
@@ -45,6 +45,8 @@
 #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 {
 
@@ -1134,6 +1136,20 @@ int InputMethodController::TextInputFlags() const {
     }
   }
 
+  if (IsHTMLFormControlElement(element)) {
+    if (GetDocument()
+            .GetPage()
+            ->GetFocusController()
+            .NextFocusableElementInForm(element, kWebFocusTypeForward))
+      flags |= kWebTextInputFlagHaveNextFocusableElement;
+
+    if (GetDocument()
+            .GetPage()
+            ->GetFocusController()
+            .NextFocusableElementInForm(element, kWebFocusTypeBackward))
+      flags |= kWebTextInputFlagHavePreviousFocusableElement;
+  }
+
   return flags;
 }