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

ios/chrome/app/chrome_app_startup_parameters.mm

Index: ios/chrome/app/chrome_app_startup_parameters.mm
diff --git a/ios/chrome/app/chrome_app_startup_parameters.mm b/ios/chrome/app/chrome_app_startup_parameters.mm
index 74054b0267f49665353515c8c2e68f3c4772de89..bc1a9f8307586ff86c58b6c8a9e00b5c9df94803 100644
--- a/ios/chrome/app/chrome_app_startup_parameters.mm
+++ b/ios/chrome/app/chrome_app_startup_parameters.mm
@@ -286,6 +286,33 @@ enum MobileSessionStartAction {
                                                     completeURL:url];
   }
 
+  if ([command
+          isEqualToString:base::SysUTF8ToNSString(
+                              app_group::kChromeAppGroupQRScannerCommand)]) {
+    ChromeAppStartupParameters* params = [[ChromeAppStartupParameters alloc]
+        initWithExternalURL:GURL(kChromeUINewTabURL)
+        xCallbackParameters:nil
+          declaredSourceApp:appId
+            secureSourceApp:secureSourceApp
+                completeURL:url];
+    [params setLaunchQRScanner:YES];
+    return params;
+  }
+
+  if ([command isEqualToString:
+                   base::SysUTF8ToNSString(
+                       app_group::kChromeAppGroupIncognitoSearchCommand)]) {
+    ChromeAppStartupParameters* params = [[ChromeAppStartupParameters alloc]
+        initWithExternalURL:GURL(kChromeUINewTabURL)
+        xCallbackParameters:nil
+          declaredSourceApp:appId
+            secureSourceApp:secureSourceApp
+                completeURL:url];
+    [params setLaunchInIncognito:YES];
+    [params setLaunchFocusOmnibox:YES];
+    return params;
+  }
+
   return nil;
 }