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

chrome/test/ppapi/ppapi_browsertest.cc

Index: chrome/test/ppapi/ppapi_browsertest.cc
diff --git a/chrome/test/ppapi/ppapi_browsertest.cc b/chrome/test/ppapi/ppapi_browsertest.cc
index 47157b6040565cfe03ce3f4d6419939a1b67d0c4..cf96a3eb28ef24e5f9bf9b5be5bf14469168c6c6 100644
--- a/chrome/test/ppapi/ppapi_browsertest.cc
+++ b/chrome/test/ppapi/ppapi_browsertest.cc
@@ -21,6 +21,7 @@
 #include "content/public/common/url_constants.h"
 #include "content/public/test/javascript_test_observer.h"
 #include "content/public/test/test_renderer_host.h"
+#include "extensions/common/constants.h"
 #include "extensions/test/extension_test_message_listener.h"
 #include "ppapi/shared_impl/test_harness_utils.h"
 
@@ -1353,10 +1354,9 @@ class PackagedAppTest : public ExtensionBrowserTest {
     const extensions::Extension* extension = LoadExtension(app_dir);
     ASSERT_TRUE(extension);
 
-    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);
   }