Add a new field "source" in launchData of chrome.app.runtime.onLaunched() to trace launch source.

chrome/browser/apps/app_launch_for_metro_restart_win.cc

 // Copyright 2013 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/apps/app_launch_for_metro_restart_win.h"
 
 #include "apps/launcher.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/pref_names.h"
 #include "extensions/browser/api/app_runtime/app_runtime_api.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/common/constants.h"
 
 using extensions::AppRuntimeEventRouter;
 using extensions::Extension;
 using extensions::ExtensionSystem;
 
 namespace app_metro_launch {
 
 namespace {
 
 void LaunchAppWithId(Profile* profile,
                      const std::string& extension_id) {
   ExtensionService* extension_service =
       ExtensionSystem::Get(profile)->extension_service();
   if (!extension_service)
     return;
 
   const Extension* extension =
       extension_service->GetExtensionById(extension_id, false);
   if (!extension)
     return;
 
-  AppRuntimeEventRouter::DispatchOnLaunchedEvent(profile, extension);
+  AppRuntimeEventRouter::DispatchOnLaunchedEvent(profile, extension,
+                                                 extensions::SOURCE_WIN_METRO);

[benwells, 2014/10/28 21:22:47]

This should just be the same as the other restart source.

[cylee1, 2014/10/29 16:39:59]

Done.

 }
 
 }  // namespace
 
 void HandleAppLaunchForMetroRestart(Profile* profile) {
   PrefService* prefs = g_browser_process->local_state();
   if (!prefs->HasPrefPath(prefs::kAppLaunchForMetroRestartProfile))
     return;
 
   // This will be called for each profile that had a browser window open before
@@ skipping 30 matching lines @@
                    profile->GetPath().BaseName().MaybeAsASCII());
   prefs->SetString(prefs::kAppLaunchForMetroRestart, extension_id);
 }
 
 void RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterStringPref(prefs::kAppLaunchForMetroRestart, "");
   registry->RegisterStringPref(prefs::kAppLaunchForMetroRestartProfile, "");
 }
 
 }  // namespace app_metro_launch