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

chrome/browser/extensions/extension_apitest.cc

Index: chrome/browser/extensions/extension_apitest.cc
diff --git a/chrome/browser/extensions/extension_apitest.cc b/chrome/browser/extensions/extension_apitest.cc
index 90be1ca7bda537c1c9690989def9cda2a94e8dee..76fb1782e895a4b7780c73c4c3f3523181234fa3 100644
--- a/chrome/browser/extensions/extension_apitest.cc
+++ b/chrome/browser/extensions/extension_apitest.cc
@@ -11,10 +11,12 @@
 #include "chrome/browser/extensions/unpacked_installer.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 "chrome/test/base/ui_test_utils.h"
 #include "extensions/browser/api/test/test_api.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/test/result_catcher.h"
@@ -307,10 +309,9 @@ bool ExtensionApiTest::RunExtensionTestImpl(const std::string& extension_name,
     else
       ui_test_utils::NavigateToURL(browser(), url);
   } else if (launch_platform_app) {
-    AppLaunchParams params(browser()->profile(),
-                           extension,
-                           extensions::LAUNCH_CONTAINER_NONE,
-                           NEW_WINDOW);
+    AppLaunchParams params(browser()->profile(), extension,
+                           extensions::LAUNCH_CONTAINER_NONE, NEW_WINDOW,
+                           extensions::SOURCE_UNTRACKED);
     params.command_line = *CommandLine::ForCurrentProcess();
     OpenApplication(params);
   }