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

chrome/browser/apps/app_window_browsertest.cc

Index: chrome/browser/apps/app_window_browsertest.cc
diff --git a/chrome/browser/apps/app_window_browsertest.cc b/chrome/browser/apps/app_window_browsertest.cc
index 12bcbab266cd9d1230e800352c8d8d3f8ca4da33..4674257ecf77040360c736b4e3b152002c599e74 100644
--- a/chrome/browser/apps/app_window_browsertest.cc
+++ b/chrome/browser/apps/app_window_browsertest.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.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"
@@ -216,10 +217,9 @@ IN_PROC_BROWSER_TEST_F(AppWindowAPITest,
       test_data_dir_.AppendASCII("platform_apps").AppendASCII("window_api"));
   EXPECT_TRUE(extension);
 
-  OpenApplication(AppLaunchParams(browser()->profile(),
-                                  extension,
-                                  extensions::LAUNCH_CONTAINER_NONE,
-                                  NEW_WINDOW));
+  OpenApplication(AppLaunchParams(browser()->profile(), extension,
+                                  extensions::LAUNCH_CONTAINER_NONE, NEW_WINDOW,
+                                  extensions::SOURCE_UNTRACKED));
 
   ExtensionTestMessageListener geometry_listener("ListenGeometryChange", true);