Allow passing in a list of scopes to the access token fetcher class.

chrome/common/net/gaia/oauth2_access_token_fetcher.h

Index: chrome/common/net/gaia/oauth2_access_token_fetcher.h
===================================================================
--- chrome/common/net/gaia/oauth2_access_token_fetcher.h	(revision 111883)
+++ chrome/common/net/gaia/oauth2_access_token_fetcher.h	(working copy)
@@ -49,7 +49,8 @@
 
   void Start(const std::string& client_id,
              const std::string& client_secret,
-             const std::string& refresh_token);
+             const std::string& refresh_token,
+             const std::vector<std::string>& scopes);
 
   void CancelRequest();
 
@@ -74,9 +75,11 @@
 
   // Other helpers.
   static GURL MakeGetAccessTokenUrl();
-  static std::string MakeGetAccessTokenBody(const std::string& client_id,
-                                            const std::string& client_secret,
-                                            const std::string& refresh_token);
+  static std::string MakeGetAccessTokenBody(
+      const std::string& client_id,
+      const std::string& client_secret,
+      const std::string& refresh_token,
+      const std::vector<std::string>& scopes);
   static bool ParseGetAccessTokenResponse(const content::URLFetcher* source,
                                           std::string* access_token);
 
@@ -91,10 +94,13 @@
   std::string client_id_;
   std::string client_secret_;
   std::string refresh_token_;
+  std::vector<std::string> scopes_;
 
   friend class OAuth2AccessTokenFetcherTest;
   FRIEND_TEST_ALL_PREFIXES(OAuth2AccessTokenFetcherTest,
                            ParseGetAccessTokenResponse);
+  FRIEND_TEST_ALL_PREFIXES(OAuth2AccessTokenFetcherTest,
+                           MakeGetAccessTokenBody);
 
   DISALLOW_COPY_AND_ASSIGN(OAuth2AccessTokenFetcher);
 };