Remove 'WebPlugin::CheckIfRunInsecureContent'.

third_party/WebKit/public/web/WebFrame.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 298 matching lines @@
     //     doesn't yet restrict the isolated world to the provided policy.
     virtual void setIsolatedWorldContentSecurityPolicy(
         int worldID, const WebString&) = 0;
 
     // Logs to the console associated with this frame.
     virtual void addMessageToConsole(const WebConsoleMessage&) = 0;
 
     // Calls window.gc() if it is defined.
     virtual void collectGarbage() = 0;
 
-    // Check if the scripting URL represents a mixed content condition relative
-    // to this frame.
-    virtual bool checkIfRunInsecureContent(const WebURL&) const = 0;
-
     // Executes script in the context of the current page and returns the value
     // that the script evaluated to.
     // DEPRECATED: Use WebLocalFrame::requestExecuteScriptAndReturnValue.
     virtual v8::Local<v8::Value> executeScriptAndReturnValue(
         const WebScriptSource&) = 0;
 
     // worldID must be > 0 (as 0 represents the main world).
     // worldID must be < EmbedderWorldIdLimit, high number used internally.
     // DEPRECATED: Use WebLocalFrame::requestExecuteScriptInIsolatedWorld.
     virtual void executeScriptInIsolatedWorld(
@@ skipping 410 matching lines @@
     WebFrame* m_firstChild;
     WebFrame* m_lastChild;
 
     WebFrame* m_opener;
     WebPrivateOwnPtr<OpenedFrameTracker> m_openedFrameTracker;
 };
 
 } // namespace blink
 
 #endif