Add callback for upload progress in Drive service and operation layer.

chrome/browser/google_apis/drive_api_operations.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_GOOGLE_APIS_DRIVE_API_OPERATIONS_H_
 #define CHROME_BROWSER_GOOGLE_APIS_DRIVE_API_OPERATIONS_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
@@ skipping 429 matching lines @@
 // Callback used for ResumeUpload() (and will be used for GetUploadStatus()).
 typedef base::Callback<void(
     const UploadRangeResponse& response,
     scoped_ptr<FileResource> new_resource)> UploadRangeCallback;
 
 //============================ ResumeUploadOperation ===========================
 
 // Performs the operation for resuming the upload of a file.
 class ResumeUploadOperation : public ResumeUploadOperationBase {
  public:
-  // See also ResumeUploadOperationBase's comment for parameters meaining.
-  // |callback| must not be null.
+  // See also ResumeUploadOperationBase's comment for parameters meaning.
+  // |callback| must not be null. |progress_callback| may be null.
   ResumeUploadOperation(
       OperationRegistry* registry,
       net::URLRequestContextGetter* url_request_context_getter,
       UploadMode upload_mode,
       const base::FilePath& drive_file_path,
       const GURL& upload_location,
       int64 start_position,
       int64 end_position,
       int64 content_length,
       const std::string& content_type,
       const scoped_refptr<net::IOBuffer>& buf,
-      const UploadRangeCallback& callback);
+      const UploadRangeCallback& callback,
+      const ProgressCallback& progress_callback);
   virtual ~ResumeUploadOperation();
 
  protected:
   // UploadRangeOperationBase overrides.
   virtual void OnRangeOperationComplete(
       const UploadRangeResponse& response,
       scoped_ptr<base::Value> value) OVERRIDE;
 
  private:
   const UploadRangeCallback callback_;
+  const ProgressCallback progress_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ResumeUploadOperation);
 };
 
 }  // namespace drive
 }  // namespace google_apis
 
 #endif  // CHROME_BROWSER_GOOGLE_APIS_DRIVE_API_OPERATIONS_H_