Media gallery fixups for scoped_refptr<T> operator T* removal.

chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.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_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_
 
 #include <list>
 #include <map>
 #include <vector>
@@ skipping 32 matching lines @@
       const ReadDirectorySuccessCallback& success_callback,
       const ErrorCallback& error_callback) OVERRIDE;
 
   // Note: passed absolute paths.
   virtual void CreateSnapshotFile(
       const base::FilePath& device_file_path,
       const base::FilePath& local_path,
       const CreateSnapshotFileSuccessCallback& success_callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual bool IsStreaming() OVERRIDE;
-  virtual void ReadBytes(
-      const base::FilePath& device_file_path,
-      net::IOBuffer* buf, int64 offset, int buf_len,
-      const ReadBytesSuccessCallback& success_callback,
-      const ErrorCallback& error_callback) OVERRIDE;
+  virtual void ReadBytes(const base::FilePath& device_file_path,
+                         const scoped_refptr<net::IOBuffer>& buf,
+                         int64 offset,
+                         int buf_len,
+                         const ReadBytesSuccessCallback& success_callback,
+                         const ErrorCallback& error_callback) OVERRIDE;
   virtual void CancelPendingTasksAndDeleteDelegate() OVERRIDE;
 
   // Forward delegates for ImageCaptureDeviceListener. These are
   // invoked in callbacks of the ImageCapture library on the UI thread.
   virtual void ItemAdded(const std::string& name,
                          const base::File::Info& info);
   virtual void NoMoreItems();
   virtual void DownloadedFile(const std::string& name,
                               base::File::Error error);
 
@@ skipping 83 matching lines @@
 
   ReadFileTransactionList read_file_transactions_;
   ReadDirTransactionList read_dir_transactions_;
 
   base::WeakPtrFactory<MTPDeviceDelegateImplMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceDelegateImplMac);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_