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

ios/chrome/app/chrome_app_startup_parameters.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.
 
 #import "ios/chrome/app/chrome_app_startup_parameters.h"
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 268 matching lines @@
     if (!externalURL.is_valid() || !externalURL.SchemeIsHTTPOrHTTPS())
       return nil;
     return
         [[ChromeAppStartupParameters alloc] initWithExternalURL:externalURL
                                             xCallbackParameters:nil
                                               declaredSourceApp:appId
                                                 secureSourceApp:secureSourceApp
                                                     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;
 }
 
 - (MobileSessionCallerApp)callerApp {
   if ([_secureSourceApp isEqualToString:@"TodayExtension"])
     return CALLER_APP_GOOGLE_CHROME_TODAY_EXTENSION;
 
   if (![_declaredSourceApp length])
     return CALLER_APP_NOT_AVAILABLE;
   if ([_declaredSourceApp isEqualToString:@"com.google.GoogleMobile"])
@@ skipping 45 matching lines @@
   }
   if (found.location > 0) {
     unichar charBefore = [query characterAtIndex:(found.location - 1)];
     if (charBefore != '&')
       return first_run::LAUNCH_BY_MOBILESAFARI;
   }
   return first_run::LAUNCH_BY_SMARTAPPBANNER;
 }
 
 @end