Adding domain and facade supporting classes for remoting iOS app.

remoting/client/ios/domain/user.mm

Index: remoting/client/ios/domain/user.mm
diff --git a/remoting/client/ios/domain/user.mm b/remoting/client/ios/domain/user.mm
new file mode 100644
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+++ b/remoting/client/ios/domain/user.mm
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+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#import "remoting/client/ios/domain/user.h"
+
+@implementation User
+
+@synthesize userId = _userId;
+@synthesize userFullName = _userFullName;
+@synthesize userEmail = _userEmail;
+
+// Parse jsonData into Host list.
++ (User*)parseListFromJSON:(NSMutableData*)data {
+  NSError* error;
+
+  NSDictionary* json = [NSJSONSerialization JSONObjectWithData:data
+                                                       options:kNilOptions
+                                                         error:&error];
+
+  User* user = [[User alloc] init];
+  user.userId = [json objectForKey:@"userId"];
+  user.userFullName = [json objectForKey:@"userFullName"];
+  user.userEmail = [json objectForKey:@"userEmail"];
+
+  return user;
+}
+
+- (NSComparisonResult)compare:(User*)user {
+  return [self.userId compare:user.userId];
+}
+
+@end