Added authorized install with a script to do the copy.

chrome/installer/mac/app/AppDelegate.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 "AppDelegate.h"
 
 #import "InstallerWindowController.h"
 #import "NSError+ChromeInstallerAdditions.h"
 #import "NSAlert+ChromeInstallerAdditions.h"
+#import "AuthorizedInstall.h"
 
 @interface NSAlert ()
 - (void)beginSheetModalForWindow:(NSWindow*)sheetWindow
                completionHandler:
                    (void (^__nullable)(NSModalResponse returnCode))handler;
 @end
 
 @interface AppDelegate ()<OmahaCommunicationDelegate, DownloaderDelegate> {
   InstallerWindowController* installerWindowController_;
+  AuthorizedInstall* authorizedInstall_;
 }
 @property(strong) NSWindow* window;
 @end
 
 @implementation AppDelegate
 @synthesize window = window_;
 
 // Sets up the main window and begins the downloading process.
 - (void)applicationDidFinishLaunching:(NSNotification*)aNotification {
+  // TODO: fix UI not loading until after asking for authorization.
   installerWindowController_ =
       [[InstallerWindowController alloc] initWithWindow:window_];
-  [self startDownload];
+  authorizedInstall_ = [[AuthorizedInstall alloc] init];
+  if ([authorizedInstall_ loadInstallationTool]) {
+    [self startDownload];
+  } else {
+    [self onLoadInstallationToolFailure];
+  }
 }
 
 - (void)applicationWillTerminate:(NSNotification*)aNotification {
 }
 
 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication*)sender {
   return YES;
 }
 
 - (void)startDownload {
@@ skipping 23 matching lines @@
 // to update the progressbar without having direct access to any UI obejcts.
 - (void)didDownloadData:(double)downloadProgressPercentage {
   [installerWindowController_
       updateDownloadProgress:(double)downloadProgressPercentage];
 }
 
 - (void)downloader:(Downloader*)download
     onDownloadSuccess:(NSURL*)diskImagePath {
   [installerWindowController_ updateStatusDescription:@"Done."];
   [installerWindowController_ enableLaunchButton];
-  // TODO: replace the line of code below with real code someday
+  // TODO: Add unpacking step here and pass the path to the app bundle inside
+  // the mounted disk image path to startInstall. Currently passing hardcoded
+  // path to preunpacked app bundle.
+  //[authorizedInstall_
+  //    startInstall:@"$HOME/Downloads/Google Chrome.app"];
 }
 
 - (void)downloader:(Downloader*)download
     onDownloadFailureWithError:(NSError*)error {
   NSError* downloadError =
       [NSError errorForAlerts:@"Download Failure"
               withDescription:@"Unable to download Google Chrome."
                 isRecoverable:NO];
   [self displayError:downloadError];
 }
 
+- (void)onLoadInstallationToolFailure {
+  NSError* loadToolError = [NSError
+       errorForAlerts:@"Could not load installion tool"
+      withDescription:
+          @"Your Chrome Installer may be corrupted. Download and try again."
+        isRecoverable:NO];
+  [self displayError:loadToolError];
+}
+
 // Displays an alert on the main window using the contents of the passed in
 // error.
 - (void)displayError:(NSError*)error {
   NSAlert* alertForUser = [NSAlert alertWithError:error];
 
-  dispatch_sync(dispatch_get_main_queue(), ^{
+  dispatch_async(dispatch_get_main_queue(), ^{
     [alertForUser beginSheetModalForWindow:window_
                          completionHandler:^(NSModalResponse returnCode) {
                            if (returnCode != [alertForUser quitButton]) {
                              [self startDownload];
                            } else {
                              [NSApp terminate:nil];
                            }
                          }];
   });
 }
 
 @end