Correctly deal with tokens for supervised users in ProfileOAuth2TokenService.

chrome/browser/managed_mode/managed_user_constants.h

Index: chrome/browser/managed_mode/managed_user_constants.h
diff --git a/chrome/browser/managed_mode/managed_user_constants.h b/chrome/browser/managed_mode/managed_user_constants.h
index b60da7ac858889991cc0f1885041fadb63f71ddd..8206ac749adf4f970ba0108685152f0d7f6fd431 100644
--- a/chrome/browser/managed_mode/managed_user_constants.h
+++ b/chrome/browser/managed_mode/managed_user_constants.h
@@ -16,6 +16,10 @@ extern const char kForceSafeSearch[];
 extern const char kSigninAllowed[];
 extern const char kUserName[];
 
+// A pseudo-email address for systems that expect well-formed email addresses
+// (like Sync), even though we're not signed in.
+extern const char kManagedUserPseudoEmail[];
+
 }  // namespace managed_users
 
 #endif  // CHROME_BROWSER_MANAGED_MODE_MANAGED_USER_CONSTANTS_H_