[CRD iOS] Implementing save to keychain and user defaults for login info. Refactor remoting service.

remoting/client/ios/domain/user_info.h

Index: remoting/client/ios/domain/user_info.h
diff --git a/remoting/client/ios/domain/user_info.h b/remoting/client/ios/domain/user_info.h
index 5bbae710ff5aede3b7c499df3ebadfb79fe93b1c..8c463317839959a8ad2282d65446236e4c0e56e6 100644
--- a/remoting/client/ios/domain/user_info.h
+++ b/remoting/client/ios/domain/user_info.h
@@ -14,9 +14,15 @@
 @property(nonatomic, copy) NSString* userId;
 @property(nonatomic, copy) NSString* userFullName;
 @property(nonatomic, copy) NSString* userEmail;
+@property(nonatomic, copy) NSString* refreshToken;
 
+// Convert a json blob into a |UserInfo| object. Most useful for test.
+// TODO(nicholss): Might move this out into a catagory.
 + (UserInfo*)parseListFromJSON:(NSMutableData*)data;
 
+// This returns the authenticated state of the this user info object.
+- (BOOL)isAuthenticated;
+// Compare two |UserInfo| objects.
 - (NSComparisonResult)compare:(UserInfo*)user;
 
 @end