Remove 'WebPlugin::CheckIfRunInsecureContent'.

content/plugin/webplugin_proxy.cc

 // Copyright (c) 2012 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.
 
 #include "content/plugin/webplugin_proxy.h"
 
 #include "build/build_config.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
@@ skipping 525 matching lines @@
     } else {
       index++;
     }
   }
 }
 
 void WebPluginProxy::URLRedirectResponse(bool allow, int resource_id) {
   Send(new PluginHostMsg_URLRedirectResponse(route_id_, allow, resource_id));
 }
 
-bool WebPluginProxy::CheckIfRunInsecureContent(const GURL& url) {
-  bool result = true;
-  Send(new PluginHostMsg_CheckIfRunInsecureContent(
-      route_id_, url, &result));
-  return result;
-}
-
 #if defined(OS_WIN) && !defined(USE_AURA)
 void WebPluginProxy::UpdateIMEStatus() {
   // Retrieve the IME status from a plugin and send it to a renderer process
   // when the plugin has updated it.
   int input_type;
   gfx::Rect caret_rect;
   if (!delegate_->GetIMEStatus(&input_type, &caret_rect))
     return;
 
   Send(new PluginHostMsg_NotifyIMEStatus(route_id_, input_type, caret_rect));
 }
 #endif
 
 }  // namespace content