Move the responsibility to convert from JSON to AccountMetadata into gdata_wapi_operations.

chrome/browser/google_apis/gdata_wapi_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_GDATA_WAPI_OPERATIONS_H_
 #define CHROME_BROWSER_GOOGLE_APIS_GDATA_WAPI_OPERATIONS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 95 matching lines @@
 //========================= GetAccountMetadataOperation ========================
 
 // This class performs the operation for fetching account metadata.
 class GetAccountMetadataOperation : public GetDataOperation {
  public:
   // |callback| must not be null.
   GetAccountMetadataOperation(
       OperationRegistry* registry,
       net::URLRequestContextGetter* url_request_context_getter,
       const GDataWapiUrlGenerator& url_generator,
-      const GetDataCallback& callback);
+      const GetAccountMetadataCallback& callback);
   virtual ~GetAccountMetadataOperation();
 
  protected:
   // UrlFetchOperationBase overrides.
   virtual GURL GetURL() const OVERRIDE;
 
  private:
   const GDataWapiUrlGenerator url_generator_;
   DISALLOW_COPY_AND_ASSIGN(GetAccountMetadataOperation);
 };
@@ skipping 395 matching lines @@
  private:
   const UploadRangeCallback callback_;
   const int64 content_length_;
 
   DISALLOW_COPY_AND_ASSIGN(GetUploadStatusOperation);
 };
 
 }  // namespace google_apis
 
 #endif  // CHROME_BROWSER_GOOGLE_APIS_GDATA_WAPI_OPERATIONS_H_