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

chrome/browser/extensions/api/management/chrome_management_api_delegate.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/extensions/api/management/chrome_management_api_delegate.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/bookmark_app_helper.h"
 #include "chrome/browser/extensions/chrome_extension_function_details.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 224 matching lines @@
 }
 
 bool ChromeManagementAPIDelegate::LaunchAppFunctionDelegate(
     const extensions::Extension* extension,
     content::BrowserContext* context) const {
   // Look at prefs to find the right launch container.
   // If the user has not set a preference, the default launch value will be
   // returned.
   extensions::LaunchContainer launch_container =
       GetLaunchContainer(extensions::ExtensionPrefs::Get(context), extension);
-  OpenApplication(AppLaunchParams(Profile::FromBrowserContext(context),
-                                  extension, launch_container,
-                                  NEW_FOREGROUND_TAB));
+  OpenApplication(AppLaunchParams(
+      Profile::FromBrowserContext(context), extension, launch_container,
+      NEW_FOREGROUND_TAB, extensions::SOURCE_MANAGEMENT_API));
   CoreAppLauncherHandler::RecordAppLaunchType(
       extension_misc::APP_LAUNCH_EXTENSION_API, extension->GetType());
 
   return true;
 }
 
 GURL ChromeManagementAPIDelegate::GetFullLaunchURL(
     const extensions::Extension* extension) const {
   return extensions::AppLaunchInfo::GetFullLaunchURL(extension);
 }
@@ skipping 122 matching lines @@
 
 GURL ChromeManagementAPIDelegate::GetIconURL(
     const extensions::Extension* extension,
     int icon_size,
     ExtensionIconSet::MatchType match,
     bool grayscale,
     bool* exists) const {
   return extensions::ExtensionIconSource::GetIconURL(extension, icon_size,
                                                      match, grayscale, exists);
 }