[Chromoting] Update uninstaller to facilitate testing automation.

remoting/host/installer/mac/uninstaller/remoting_uninstaller_app.mm

+// Copyright (c) 2012 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.
+
+#include "remoting/host/installer/mac/uninstaller/remoting_uninstaller_app.h"
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/mac/scoped_cftyperef.h"
+#include "remoting/host/installer/mac/uninstaller/remoting_uninstaller.h"
+
+@implementation RemotingUninstallerAppDelegate
+
+- (void)dealloc {
+  [super dealloc];
+}
+
+- (void)applicationDidFinishLaunching:(NSNotification*)aNotification {
+}
+
+- (void)showSuccess:(bool)success withMessage:(NSString*) message {
+  NSString* summary = success ? @"Uninstall succeeded" : @"Uninstall failed";
+  NSAlert* alert = [NSAlert alertWithMessageText:summary
+                                   defaultButton:@"OK"
+                                 alternateButton:nil
+                                     otherButton:nil
+                       informativeTextWithFormat:message];
+  [alert runModal];
+}
+
+- (IBAction)uninstall:(NSButton*)sender {
+  @try {
+    NSLog(@"Chrome Remote Desktop uninstall starting.");
+
+    RemotingUninstaller* uninstaller =
+        [[[RemotingUninstaller alloc] init] autorelease];
+    OSStatus status = [uninstaller remotingUninstall];
+
+    NSLog(@"Chrome Remote Desktop Host uninstall complete.");
+
+    bool success = false;
+    NSString* message = NULL;
+    if (status == errAuthorizationSuccess) {
+      success = true;
+      message = @"Chrome Remote Desktop Host successfully uninstalled.";
+    } else if (status == errAuthorizationCanceled) {
+      message = @"Chrome Remote Desktop Host uninstall canceled.";
+    } else if (status == errAuthorizationDenied) {
+      message = @"Chrome Remote Desktop Host uninstall authorization denied.";
+    } else {
+      [NSException raise:@"AuthorizationCopyRights Failure"
+          format:@"Error during AuthorizationCopyRights status=%ld", status];
+    }
+    if (message != NULL) {
+      NSLog(@"Uninstall %s: %@", success ? "succeeded" : "failed", message);
+      [self showSuccess:success withMessage:message];
+    }
+  }
+  @catch (NSException* exception) {
+    NSLog(@"Exception %@ %@", [exception name], [exception reason]);
+    NSString* message =
+        @"Error! Unable to uninstall Chrome Remote Desktop Host.";
+    [self showSuccess:false withMessage:message];
+  }
+
+  [NSApp terminate:self];
+}
+
+- (IBAction)cancel:(id)sender {
+  [NSApp terminate:self];
+}
+
+- (IBAction)handleMenuClose:(NSMenuItem*)sender {
+  [NSApp terminate:self];
+}
+
+@end
+
+int main(int argc, char* argv[])
+{
+  // The no-ui option skips the UI confirmation dialogs. This is provided as
+  // a convenience for our automated testing.
+  // There will still be an elevation prompt unless the command is run as root.
+  if (argc == 2 && !strcmp(argv[1], "--no-ui")) {
+    @autoreleasepool {
+      NSLog(@"Chrome Remote Desktop uninstall starting.");
+      NSLog(@"--no-ui : Suppressing UI");
+
+      RemotingUninstaller* uninstaller =
+          [[[RemotingUninstaller alloc] init] autorelease];
+      OSStatus status = [uninstaller remotingUninstall];
+
+      NSLog(@"Chrome Remote Desktop Host uninstall complete.");
+      NSLog(@"Status = %ld", status);
+      return status != errAuthorizationSuccess;
+    }
+  } else {
+    return NSApplicationMain(argc, (const char**)argv);
+  }
+}
+