Remove unused helpers to selectively traverse through only local frames.

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 "WebFrame.h"
 #include "WebFrameLoadType.h"
 
@@ skipping 49 matching lines @@
     virtual void setAutofillClient(WebAutofillClient*) = 0;
     virtual WebAutofillClient* autofillClient() = 0;
     virtual void setDevToolsAgentClient(WebDevToolsAgentClient*) = 0;
     virtual WebDevToolsAgent* devToolsAgent() = 0;
 
     // Hierarchy ----------------------------------------------------------
 
     // Get the highest-level LocalFrame in this frame's in-process subtree.
     virtual WebLocalFrame* localRoot() = 0;
 
-    // Returns the previous/next local frame in "frame traversal order",
-    // optionally wrapping around.
-    virtual WebLocalFrame* traversePreviousLocal(bool wrap) const = 0;
-    virtual WebLocalFrame* traverseNextLocal(bool wrap) const = 0;
-
     // Navigation Ping --------------------------------------------------------
 
     virtual void sendPings(const WebURL& destinationURL) = 0;
 
     // Navigation ----------------------------------------------------------
 
     // Runs beforeunload handlers for this frame and returns the value returned
     // by handlers.
     // Note: this may lead to the destruction of the frame.
     virtual bool dispatchBeforeUnloadEvent(bool isReload) = 0;
@@ skipping 265 matching lines @@
     // 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