ntp4: record app launch source

chrome/browser/ui/webui/ntp/app_launcher_handler.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_app_api.h"
@@ skipping 84 matching lines @@
 
   // Callback for the "promoSeen" message.
   void HandlePromoSeen(const base::ListValue* args);
 
   // Callback for the "saveAppPageName" message.
   void HandleSaveAppPageName(const base::ListValue* args);
 
   // Callback for the "generateAppForLink" message.
   void HandleGenerateAppForLink(const base::ListValue* args);
 
+  // Callback for the "recordAppLaunchByURL" message. Takes a URL and a launch

[Rick Byers, 2011/08/04 00:32:21]

nit: s/URL/escaped URL
I never would have guessed this was supposed to be URI-escaped, seems strange
but OK as long as it's clear that's the contract.

+  // source (integer), and if the URL represents an app, records the action for
+  // UMA.
+  void HandleRecordAppLaunchByURL(const base::ListValue* args);
+
   // Register app launcher preferences.
   static void RegisterUserPrefs(PrefService* pref_service);
 
  private:
   // Records a web store launch in the appropriate histograms. |promo_active|
   // specifies if the web store promotion was active.
   static void RecordWebStoreLaunch(bool promo_active);
 
   // Records an app launch in the corresponding |bucket| of the app launch
   // histogram. |promo_active| specifies if the web store promotion was active.
@@ skipping 59 matching lines @@
   // refreshing. This is useful when making many batch updates to avoid flicker.
   bool ignore_changes_;
 
   // Hold state for favicon requests.
   CancelableRequestConsumerTSimple<WebApplicationInfo*> favicon_consumer_;
 
   DISALLOW_COPY_AND_ASSIGN(AppLauncherHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_