Use different help URLs for menus, accelerators, and WebUI.

chrome/browser/ui/browser.h

 // Copyright (c) 2012 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_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 140 matching lines @@
 
     // The browser is shutting down and there are active downloads
     // that would be cancelled.
     DOWNLOAD_CLOSE_BROWSER_SHUTDOWN,
 
     // There are active downloads associated with this incognito profile
     // that would be canceled.
     DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE,
   };
 
+  // Sources of requests to show the help tab.
+  enum HelpSource {
+    // Keyboard accelerators.
+    HELP_SOURCE_KEYBOARD,
+
+    // Menus (e.g. wrench menu or Chrome OS system menu).
+    HELP_SOURCE_MENU,
+
+    // WebUI (the "About" page).
+    HELP_SOURCE_WEBUI,
+  };
+
   // Different types of action when web app info is available.
   // OnDidGetApplicationInfo uses this to dispatch calls.
   enum WebAppAction {
     NONE,             // No action at all.
     CREATE_SHORTCUT,  // Bring up create application shortcut dialog.
     UPDATE_SHORTCUT   // Update icon for app shortcut.
   };
 
   struct CreateParams {
     CreateParams();
@@ skipping 136 matching lines @@
 
   // Opens a new window and opens the bookmark manager.
   static void OpenBookmarkManagerWindow(Profile* profile);
 
 #if defined(OS_MACOSX)
   // Open a new window with history/downloads/help/options (needed on Mac when
   // there are no windows).
   static void OpenAboutWindow(Profile* profile);
   static void OpenHistoryWindow(Profile* profile);
   static void OpenDownloadsWindow(Profile* profile);
-  static void OpenHelpWindow(Profile* profile);
+  static void OpenHelpWindow(Profile* profile, HelpSource source);
   static void OpenOptionsWindow(Profile* profile);
   static void OpenSyncSetupWindow(Profile* profile,
                                   SyncPromoUI::Source source);
   static void OpenClearBrowsingDataDialogWindow(Profile* profile);
   static void OpenImportSettingsDialogWindow(Profile* profile);
   static void OpenInstantConfirmDialogWindow(Profile* profile);
 #endif
 
   // Opens a window with the extensions tab in it - needed by long-lived
   // extensions which may run with no windows open.
@@ skipping 292 matching lines @@
   // Shows the Content Settings page for a given content type.
   void ShowContentSettingsPage(ContentSettingsType content_type);
   void OpenClearBrowsingDataDialog();
   void OpenOptionsDialog();
   void OpenPasswordManager();
   void OpenSyncMyBookmarksDialog();
   void OpenImportSettingsDialog();
   void OpenInstantConfirmDialog();
   void OpenAboutChromeDialog();
   void OpenUpdateChromeDialog();
-  void ShowHelpTab();
+  void ShowHelpTab(HelpSource source);
   void OpenPrivacyDashboardTabAndActivate();
   void OpenSearchEngineOptionsDialog();
   void OpenPluginsTabAndActivate();
   void ShowSyncSetup(SyncPromoUI::Source source);
   void ToggleSpeechInput();
 
   virtual void UpdateDownloadShelfVisibility(bool visible);
 
   /////////////////////////////////////////////////////////////////////////////
 
@@ skipping 788 matching lines @@
   bool window_has_shown_;
 
   // Currently open color chooser. Non-NULL after OpenColorChooser is called and
   // before DidEndColorChooser is called.
   scoped_ptr<content::ColorChooser> color_chooser_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_