Remove 'WebPlugin::CheckIfRunInsecureContent'.

content/renderer/npapi/webplugin_delegate_proxy.cc

Index: content/renderer/npapi/webplugin_delegate_proxy.cc
diff --git a/content/renderer/npapi/webplugin_delegate_proxy.cc b/content/renderer/npapi/webplugin_delegate_proxy.cc
index 66f88217fd84ba4ae45fcfc220aa5bf33d845390..a14a7a9525ddabb9623b880e77fe773f1c9a7932 100644
--- a/content/renderer/npapi/webplugin_delegate_proxy.cc
+++ b/content/renderer/npapi/webplugin_delegate_proxy.cc
@@ -388,8 +388,6 @@ bool WebPluginDelegateProxy::OnMessageReceived(const IPC::Message& msg) {
                         OnDeferResourceLoading)
     IPC_MESSAGE_HANDLER(PluginHostMsg_URLRedirectResponse,
                         OnURLRedirectResponse)
-    IPC_MESSAGE_HANDLER(PluginHostMsg_CheckIfRunInsecureContent,
-                        OnCheckIfRunInsecureContent)
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(PluginHostMsg_SetWindowlessData, OnSetWindowlessData)
     IPC_MESSAGE_HANDLER(PluginHostMsg_NotifyIMEStatus, OnNotifyIMEStatus)
@@ -1080,9 +1078,4 @@ void WebPluginDelegateProxy::OnURLRedirectResponse(bool allow,
   plugin_->URLRedirectResponse(allow, resource_id);
 }
 
-void WebPluginDelegateProxy::OnCheckIfRunInsecureContent(const GURL& url,
-                                                         bool* result) {
-  *result = plugin_->CheckIfRunInsecureContent(url);
-}
-
 }  // namespace content