[Android] Adding Smart GO/NEXT feature in Chrome

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index 6455f6300308540d11a0cd5f6970fcd758c24bc8..b7aa8ab2f3949ff4e786ea76fa3034fe2f81bfea 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -2571,6 +2571,24 @@ void WebLocalFrameImpl::ExtractSmartClipData(WebRect rect_in_viewport,
   }
 }
 
+void WebLocalFrameImpl::AdvanceFocusInForm(WebFocusType focusType) {
+  if (!GetFrame()->GetDocument())

[dcheng, 2017/04/27 15:33:02]

This check is unnecessary and should be a DCHECK if anything.

[AKVT, 2017/05/03 14:35:12]

Done.

+    return;
+
+  Element* element = GetFrame()->GetDocument()->FocusedElement();
+  if (!element)
+    return;
+
+  Element* nextElement =
+      GetFrame()->GetInputMethodController().NextFocusableElementInForm(
+          element, focusType);
+  if (!nextElement)
+    return;
+
+  nextElement->scrollIntoViewIfNeeded(true /*centerIfNeeded*/);
+  nextElement->focus();
+}
+
 TextCheckerClient& WebLocalFrameImpl::GetTextCheckerClient() const {
   return *text_checker_client_;
 }