Initial commit for Chrome metainstaller on Mac.

chrome/installer/mac/app/NetworkCommunication.m

+// Copyright 2016 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.
+
+#import <Foundation/Foundation.h>
+
+#import "NetworkCommunication.h"
+
+@implementation NetworkCommunication : NSObject
+
+@synthesize session = session_;
+@synthesize request = request_;
+@synthesize dataResponseHandler = dataResponseHandler_;
+@synthesize downloadResponseHandler = downloadResponseHandler_;
+
+- (id)init {
+  return [self initWithDelegate:nil];
+}
+
+- (id)initWithDelegate:(id)delegate {
+  if ((self = [super init])) {
+    NSURLSessionConfiguration* sessionConfig =
+        [NSURLSessionConfiguration defaultSessionConfiguration];
+    session_ = [NSURLSession sessionWithConfiguration:sessionConfig
+                                             delegate:delegate
+                                        delegateQueue:nil];
+  }
+  return self;
+}
+
+- (NSMutableURLRequest*)createRequestWithUrlAsString:(NSString*)urlString
+                                          andXMLBody:(NSXMLDocument*)body {
+  NSURL* requestURL = [NSURL URLWithString:urlString];
+  request_ = [NSMutableURLRequest requestWithURL:requestURL];
+  if (body) {
+    [request_ addValue:@"text/xml" forHTTPHeaderField:@"Content-Type"];
+    NSData* requestBody =
+        [[body XMLString] dataUsingEncoding:NSUTF8StringEncoding];
+    request_.HTTPBody = requestBody;
+  }
+  return request_;
+}
+
+- (void)sendDataRequestWithCompletionHandler:
+    (DataTaskCompletionHandler)completionHandler {
+  dataResponseHandler_ = completionHandler;
+  NSURLSessionDataTask* dataTask =
+      [session_ dataTaskWithRequest:request_
+                  completionHandler:dataResponseHandler_];
+
+  [dataTask resume];
+}
+
+- (void)sendDownloadRequest {
+  NSURLSessionDownloadTask* downloadTask;
+  if (downloadResponseHandler_) {
+    downloadTask = [session_ downloadTaskWithRequest:request_
+                                   completionHandler:downloadResponseHandler_];
+  } else {
+    downloadTask = [session_ downloadTaskWithRequest:request_];
+  }
+  [downloadTask resume];
+}
+
+@end