Make "source" a required argument of AppLaunchParams and fill in the argument in all call points.

chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm

Index: chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
index cc88c56ca980af9b9fa1816f6bac3783ef0d3f2f..6d6be232896dc87d6e77ed7994e5fe480f3c4605 100644
--- a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
+++ b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
@@ -10,10 +10,12 @@
 #include "base/mac/sdk_forward_declarations.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/extensions/app_launch_params.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/app_window/app_window_registry.h"
+#include "extensions/common/constants.h"
 
 using extensions::PlatformAppBrowserTest;
 
@@ -33,10 +35,8 @@ class NativeAppWindowCocoaBrowserTest : public PlatformAppBrowserTest {
           content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
           content::NotificationService::AllSources());
       OpenApplication(
-          AppLaunchParams(profile(),
-                          app_,
-                          extensions::LAUNCH_CONTAINER_NONE,
-                          NEW_WINDOW));
+          AppLaunchParams(profile(), app_, extensions::LAUNCH_CONTAINER_NONE,
+                          NEW_WINDOW, extensions::SOURCE_UNTRACKED));
       app_loaded_observer.Wait();
     }
   }