Turn FileDescriptorInfo a collection class

content/public/browser/content_browser_client.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_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 600 matching lines @@
   // This is called on the IO thread.
   virtual net::CookieStore* OverrideCookieStoreForRenderProcess(
       int render_process_id);
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.
   virtual void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
-      std::vector<FileDescriptorInfo>* mappings) {}
+      FileDescriptorInfo* mappings) {}
 #endif
 
 #if defined(OS_WIN)
   // Returns the name of the dll that contains cursors and other resources.
   virtual const wchar_t* GetResourceDllName();
 
   // This is called on the PROCESS_LAUNCHER thread before the renderer process
   // is launched. It gives the embedder a chance to add loosen the sandbox
   // policy.
   virtual void PreSpawnRenderer(sandbox::TargetPolicy* policy,
@@ skipping 11 matching lines @@
 // camera. Note that this does not query the user. |type| must be
 // MEDIA_DEVICE_AUDIO_CAPTURE or MEDIA_DEVICE_VIDEO_CAPTURE.
 virtual bool CheckMediaAccessPermission(BrowserContext* browser_context,
                                         const GURL& security_origin,
                                         MediaStreamType type);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_