Add IssueAuthToken support to the TokenService.

chrome/common/net/gaia/gaia_authenticator2.h

Index: chrome/common/net/gaia/gaia_authenticator2.h
diff --git a/chrome/common/net/gaia/gaia_authenticator2.h b/chrome/common/net/gaia/gaia_authenticator2.h
index 0e6c203c548d222d983d154d3641e732e173913e..eba6135292105967f7b5e470affb52d6a14048c3 100644
--- a/chrome/common/net/gaia/gaia_authenticator2.h
+++ b/chrome/common/net/gaia/gaia_authenticator2.h
@@ -25,12 +25,9 @@
 
 class GaiaAuthenticator2Test;
 
+// TODO(chron): Rename this to GaiaAuthFetcher or something.
 class GaiaAuthenticator2 : public URLFetcher::Delegate {
  public:
-  // Constants to use in the ClientLogin request POST body.
-  static const char kChromeOSSource[];
-  static const char kContactsService[];
-
   // The URLs for different calls in the Google Accounts programmatic login API.
   static const char kClientLoginUrl[];
   static const char kIssueAuthTokenUrl[];