Remove 'WebPlugin::CheckIfRunInsecureContent'.

content/plugin/webplugin_proxy.h

 // 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.
 
 #ifndef CONTENT_PLUGIN_WEBPLUGIN_PROXY_H_
 #define CONTENT_PLUGIN_WEBPLUGIN_PROXY_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 63 matching lines @@
                       const TransportDIB::Handle& windowless_buffer0,
                       const TransportDIB::Handle& windowless_buffer1,
                       int windowless_buffer_index);
   void CancelDocumentLoad() override;
   void DidStartLoading() override;
   void DidStopLoading() override;
   void SetDeferResourceLoading(unsigned long resource_id, bool defer) override;
   bool IsOffTheRecord() override;
   void ResourceClientDeleted(WebPluginResourceClient* resource_client) override;
   void URLRedirectResponse(bool allow, int resource_id) override;
-  bool CheckIfRunInsecureContent(const GURL& url) override;
 #if defined(OS_WIN)
   void SetWindowlessData(HANDLE pump_messages_event,
                          gfx::NativeViewId dummy_activation_window) override;
 #endif
 #if defined(OS_MACOSX)
   void FocusChanged(bool focused) override;
   void StartIme() override;
   WebPluginAcceleratedSurface* GetAcceleratedSurface(
       gfx::GpuPreference gpu_preference) override;
   void AcceleratedPluginEnabledRendering() override;
@@ skipping 108 matching lines @@
 
   // Contains the routing id of the host render view.
   int host_render_view_routing_id_;
 
   base::WeakPtrFactory<WebPluginProxy> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PLUGIN_WEBPLUGIN_PROXY_H_