Converted ResumeUploadOperation to use JSON in response instead of XML.

chrome/browser/google_apis/base_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.
 //
 // This file provides base classes used to implement operations for Google APIs.
 
 #ifndef CHROME_BROWSER_GOOGLE_APIS_BASE_OPERATIONS_H_
 #define CHROME_BROWSER_GOOGLE_APIS_BASE_OPERATIONS_H_
 
 #include <string>
@@ skipping 13 matching lines @@
 namespace base {
 class Value;
 }  // namespace base
 
 namespace net {
 class URLRequestContextGetter;
 }  // namespace net
 
 namespace google_apis {
 
+// Callback used to pass parsed JSON from ParseJson(). If parsing error occures,
+// then the passed argument is null.
+typedef base::Callback<void(scoped_ptr<base::Value> value)> ParseJsonCallback;
+
+// Parses JSON passed in |json| on blocking pool. Runs |callback| on the calling
+// thread when finished with either success or failure.
+// The callback must not be null.
+void ParseJson(const std::string& json, const ParseJsonCallback& callback);
+
 //======================= AuthenticatedOperationInterface ======================
 
 // An interface class for implementing an operation which requires OAuth2
 // authentication.
 class AuthenticatedOperationInterface {
  public:
   // Called when re-authentication is required. See Start() for details.
   typedef base::Callback<void(AuthenticatedOperationInterface* operation)>
       ReAuthenticateCallback;
 
@@ skipping 201 matching lines @@
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<GetDataOperation> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(GetDataOperation);
 };
 
 }  // namespace google_apis
 
 #endif  // CHROME_BROWSER_GOOGLE_APIS_BASE_OPERATIONS_H_