Add enterprise enrollment support for fake users.

chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h

Index: chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h
diff --git a/chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h b/chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h
index a0d020b5b66e41739b05e979f25db534b09c077d..9c5c331cf308bde14f513d01f9a77b5a2147ff73 100644
--- a/chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h
+++ b/chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h
@@ -68,6 +68,9 @@ class PolicyOAuth2TokenFetcher
     return oauth2_access_token_;
   }
 
+  // Causes fake tokens to be returned so no network calls are made.
+  static void EnableFakeForTesting();
+
  private:
   // GaiaAuthConsumer overrides.
   void OnClientOAuthSuccess(
@@ -96,6 +99,10 @@ class PolicyOAuth2TokenFetcher
   void ForwardPolicyToken(const std::string& token,
                           const GoogleServiceAuthError& error);
 
+  // If true, fake policy tokens will be sent instead of making network
+  // requests.
+  static bool enable_fake_for_testing_;
+
   // Auth code which is used to retreive a refresh token.
   std::string auth_code_;