FrameTree::Find only searches relative to local frames.

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index 9d68a6777ef6392c804aad67173f0ca12cef93b4..9d818eb8f87d3152dedb28edff38785f35423ff0 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -2630,19 +2630,6 @@ WebFrame* WebViewImpl::MainFrame() {
   return WebFrame::FromFrame(page_ ? page_->MainFrame() : nullptr);
 }
 
-WebFrame* WebViewImpl::FindFrameByName(const WebString& name,
-                                       WebFrame* relative_to_frame) {
-  // FIXME: Either this should only deal with WebLocalFrames or it should move
-  // to WebFrame.
-  if (!relative_to_frame)
-    relative_to_frame = MainFrame();
-  Frame* frame = ToWebLocalFrameBase(relative_to_frame)->GetFrame();
-  frame = frame->Tree().Find(name);
-  if (!frame || !frame->IsLocalFrame())
-    return nullptr;
-  return WebLocalFrameBase::FromFrame(ToLocalFrame(frame));
-}
-
 WebLocalFrame* WebViewImpl::FocusedFrame() {
   Frame* frame = FocusedCoreFrame();
   // TODO(yabinh): focusedCoreFrame() should always return a local frame, and