Add managed policies for Native Messaging

chrome/browser/extensions/api/messaging/native_message_process_host.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 CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PROCESS_HOST_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PROCESS_HOST_H_
 
 #include <queue>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/process.h"
 #include "chrome/browser/extensions/api/messaging/native_process_launcher.h"
 #include "content/public/browser/browser_thread.h"
 #include "ui/gfx/native_widget_types.h"
 
+class PrefService;
+
 namespace net {
 
 class DrainableIOBuffer;
 class FileStream;
 class IOBuffer;
 class IOBufferWithSize;
 
 }  // namespace net
 
 namespace extensions {
@@ skipping 16 matching lines @@
     virtual ~Client() {}
     // Called on the UI thread.
     virtual void PostMessageFromNativeProcess(int port_id,
                                               const std::string& message) = 0;
     virtual void CloseChannel(int port_id,
                               const std::string& error_message) = 0;
   };
 
   virtual ~NativeMessageProcessHost();
 
+  // Verifies that the native messaging host with the specified name is allowed
+  // by the system policies.
+  static bool IsHostAllowed(
+      const PrefService* pref_service,
+      const std::string& native_host_name);
+
   static scoped_ptr<NativeMessageProcessHost> Create(
       gfx::NativeView native_view,
       base::WeakPtr<Client> weak_client_ui,
       const std::string& source_extension_id,
       const std::string& native_host_name,
       int destination_port);
 
   // Create using specified |launcher|. Used in tests.
   static scoped_ptr<NativeMessageProcessHost> CreateWithLauncher(
       base::WeakPtr<Client> weak_client_ui,
@@ skipping 97 matching lines @@
 
   // Set to true when a write is pending.
   bool write_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeMessageProcessHost);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PROCESS_HOST_H_