Added in switches for the Mac Installer to send preferences to Chrome

chrome/installer/mac/app/AppDelegate.mm

 // 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 "AppDelegate.h"
 
+#include "chrome/common/chrome_switches.h"
+
 #import "Downloader.h"
 #import "InstallerWindowController.h"
 #import "NSError+ChromeInstallerAdditions.h"
 #import "NSAlert+ChromeInstallerAdditions.h"
 #import "OmahaCommunication.h"
 #import "Unpacker.h"
 
 @interface NSAlert ()
 - (void)beginSheetModalForWindow:(NSWindow*)sheetWindow
                completionHandler:
@@ skipping 112 matching lines @@
         removeItemAtPath:@"/Applications/Google Chromo.app"
                    error:nil];
   }
   if (![[NSFileManager defaultManager]
           moveItemAtPath:tempAppPath
                   toPath:@"/Applications/Google Chromo.app"
                    error:&error]) {
     NSLog(@"%@", error);
   }
 
-  // TODO: edit the below code to feed in command line arguments
+  NSMutableArray* installerSettings = [[NSMutableArray alloc] init];
+  if ([installerWindowController_ isUserMetricsChecked])
+    [installerSettings
+        addObject:[NSString stringWithUTF8String:switches::kEnableUserMetrics]];
+  if ([installerWindowController_ isDefaultBrowserChecked])
+    [installerSettings
+        addObject:[NSString stringWithUTF8String:switches::kSetDefaultBrowser]];
 
   [[NSWorkspace sharedWorkspace]
       launchApplicationAtURL:
           [NSURL fileURLWithPath:@"/Applications/Google Chromo.app"
                      isDirectory:NO]
                      options:NSWorkspaceLaunchDefault
-               configuration:@{}
+               configuration:@{
+                 NSWorkspaceLaunchConfigurationArguments : installerSettings
+               }
                        error:&error];
   if (error) {
     NSLog(@"Chromo failed to launch: %@", error);
   }
 
   // Begin teardown stuff!
   dispatch_async(dispatch_get_main_queue(), ^{
     [window_ orderOut:nil];
   });
 
@@ skipping 32 matching lines @@
                            if (returnCode != [alertForUser quitResponse]) {
                              [self startDownload];
                            } else {
                              [NSApp terminate:nil];
                            }
                          }];
   });
 }
 
 @end