Remove direct reference to GetBlockingPool() in c/b/google_apis.

chrome/browser/google_apis/base_requests.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 issue HTTP requests for Google
 // APIs.
 
 #ifndef CHROME_BROWSER_GOOGLE_APIS_BASE_REQUESTS_H_
 #define CHROME_BROWSER_GOOGLE_APIS_BASE_REQUESTS_H_
 
@@ skipping 17 matching lines @@
 
 class RequestSender;
 
 // Callback used to pass parsed JSON from ParseJson(). If parsing error occurs,
 // then the passed argument is null.
 typedef base::Callback<void(scoped_ptr<base::Value> value)> ParseJsonCallback;
 
 // Callback used for DownloadFileRequest and ResumeUploadRequestBase.
 typedef base::Callback<void(int64 progress, int64 total)> ProgressCallback;
 
-// Parses JSON passed in |json| on blocking pool. Runs |callback| on the calling
-// thread when finished with either success or failure.
+// Parses JSON passed in |json| on |blocking_task_runner|. 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);
+void ParseJson(base::TaskRunner* blocking_task_runner,
+               const std::string& json,
+               const ParseJsonCallback& callback);
 
 //======================= AuthenticatedRequestInterface ======================
 
 // An interface class for implementing a request which requires OAuth2
 // authentication.
 class AuthenticatedRequestInterface {
  public:
   // Called when re-authentication is required. See Start() for details.
   typedef base::Callback<void(AuthenticatedRequestInterface* request)>
       ReAuthenticateCallback;
@@ skipping 87 matching lines @@
   // Invoked when ProcessURLFetchResults() is completed.
   void OnProcessURLFetchResultsComplete(bool result);
 
   // Returns an appropriate GDataErrorCode based on the HTTP response code and
   // the status of the URLFetcher.
   static GDataErrorCode GetErrorCode(const net::URLFetcher* source);
 
   // Returns true if called on the thread where the constructor was called.
   bool CalledOnValidThread();
 
+  // Returns the task runner that should be used for blocking tasks.
+  base::TaskRunner* blocking_task_runner() const;
+
  private:
   // URLFetcherDelegate overrides.
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
 
   // AuthenticatedRequestInterface overrides.
   virtual void OnAuthFailed(GDataErrorCode code) OVERRIDE;
 
   ReAuthenticateCallback re_authenticate_callback_;
   int re_authenticate_count_;
   scoped_ptr<net::URLFetcher> url_fetcher_;
@@ skipping 39 matching lines @@
 // Callback type for DocumentServiceInterface::GetResourceList.
 // Note: json_data argument should be passed using base::Passed(&json_data), not
 // json_data.Pass().
 typedef base::Callback<void(GDataErrorCode error,
                             scoped_ptr<base::Value> json_data)> GetDataCallback;
 
 // This class performs the request for fetching and converting the fetched
 // content into a base::Value.
 class GetDataRequest : public UrlFetchRequestBase {
  public:
   // |callback| must not be null.

[satorux1, 2013/07/08 01:30:07]

While you are at it, could you document what |callback| is for?

[kinaba, 2013/07/08 03:12:02]

Done.

   GetDataRequest(RequestSender* sender, const GetDataCallback& callback);
   virtual ~GetDataRequest();
 
   // Parses JSON response.
   void ParseResponse(GDataErrorCode fetch_error_code, const std::string& data);
 
  protected:
   // UrlFetchRequestBase overrides.
   virtual void ProcessURLFetchResults(const net::URLFetcher* source) OVERRIDE;
   virtual void RunCallbackOnPrematureFailure(
@@ skipping 269 matching lines @@
   const ProgressCallback progress_callback_;
   const GURL download_url_;
   const base::FilePath output_file_path_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadFileRequestBase);
 };
 
 }  // namespace google_apis
 
 #endif  // CHROME_BROWSER_GOOGLE_APIS_BASE_REQUESTS_H_