Add app startup parameters to start the app in qr and incognito search.

ios/chrome/common/app_group/app_group_constants.mm

 // Copyright 2015 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 "ios/chrome/common/app_group/app_group_constants.h"
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/version_info/version_info.h"
 #include "ios/chrome/common/ios_app_bundle_id_prefix.h"
@@ skipping 14 matching lines @@
 const char kChromeAppGroupCommandAppPreference[] = "SourceApp";
 
 const char kChromeAppGroupCommandCommandPreference[] = "Command";
 
 const char kChromeAppGroupCommandParameterPreference[] = "Parameter";
 
 const char kChromeAppGroupOpenURLCommand[] = "openurl";
 const char kChromeAppGroupVoiceSearchCommand[] = "voicesearch";
 const char kChromeAppGroupNewTabCommand[] = "newtab";
 const char kChromeAppGroupFocusOmniboxCommand[] = "focusomnibox";
+const char kChromeAppGroupIncognitoSearchCommand[] = "incognitosearch";
+const char kChromeAppGroupQRScannerCommand[] = "qrscanner";
 
 const char kChromeAppClientID[] = "ClientID";
 const char kUserMetricsEnabledDate[] = "UserMetricsEnabledDate";
 const char kInstallDate[] = "InstallDate";
 const char kBrandCode[] = "BrandCode";
 
 NSString* const kShareItemSource = @"Source";
 NSString* const kShareItemURL = @"URL";
 NSString* const kShareItemTitle = @"Title";
 NSString* const kShareItemDate = @"Date";
@@ skipping 61 matching lines @@
       containerURLForSecurityApplicationGroupIdentifier:ApplicationGroup()];
   NSURL* chromeURL =
       [groupURL URLByAppendingPathComponent:@"Chrome" isDirectory:YES];
   NSURL* externalCommandsURL =
       [chromeURL URLByAppendingPathComponent:@"ExternalCommands"
                                  isDirectory:YES];
   return externalCommandsURL;
 }
 
 }  // namespace app_group