Remove 'WebPlugin::CheckIfRunInsecureContent'.

content/renderer/npapi/webplugin_impl.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_RENDERER_NPAPI_WEBPLUGIN_IMPL_H_
 #define CONTENT_RENDERER_NPAPI_WEBPLUGIN_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 99 matching lines @@
                  const GURL& first_party_for_cookies,
                  const std::string& cookie) override;
   std::string GetCookies(const GURL& url,
                          const GURL& first_party_for_cookies) override;
   void CancelDocumentLoad() override;
   void DidStartLoading() override;
   void DidStopLoading() override;
   bool IsOffTheRecord() override;
   void SetDeferResourceLoading(unsigned long resource_id, bool defer) 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 {}
   void ReparentPluginWindow(HWND window, HWND parent) { }
   void ReportExecutableMemory(size_t size) { }
 #endif
 #if defined(OS_MACOSX)
   WebPluginAcceleratedSurface* GetAcceleratedSurface(
       gfx::GpuPreference gpu_preference) override;
   void AcceleratedPluginEnabledRendering() override;
@@ skipping 187 matching lines @@
   };
 
   LoaderClient loader_client_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_NPAPI_WEBPLUGIN_IMPL_H_