Allow chrome to become the os default handler for arbitrary protocols on mac/win.

chrome/browser/ui/webui/options/browser_options_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_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
 #pragma once
 
 #include "chrome/browser/autocomplete/autocomplete_controller_delegate.h"
 #include "chrome/browser/prefs/pref_member.h"
 #include "chrome/browser/search_engines/template_url_model_observer.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 #include "ui/base/models/table_model_observer.h"
 
 class AutocompleteController;
 class CustomHomePagesTableModel;
 class OptionsManagedBannerHandler;
 class TemplateURLModel;
 
 // Chrome browser options page UI handler.
 class BrowserOptionsHandler : public OptionsPageUIHandler,
                               public AutocompleteControllerDelegate,
-                              public ShellIntegration::DefaultBrowserObserver,
+                              public ShellIntegration::DefaultWebClientObserver,
                               public TemplateURLModelObserver,
                               public ui::TableModelObserver {
  public:
   BrowserOptionsHandler();
   virtual ~BrowserOptionsHandler();
 
   virtual void Initialize();
 
   // OptionsPageUIHandler implementation.
   virtual void GetLocalizedValues(DictionaryValue* localized_strings);
   virtual void RegisterMessages();
 
   // AutocompleteControllerDelegate implementation.
   virtual void OnResultChanged(bool default_match_changed);
 
-  // ShellIntegration::DefaultBrowserObserver implementation.
-  virtual void SetDefaultBrowserUIState(
-      ShellIntegration::DefaultBrowserUIState state);
+  // ShellIntegration::DefaultWebClientObserver implementation.
+  virtual void SetDefaultWebClientUIState(
+      ShellIntegration::DefaultWebClientUIState state);
 
   // TemplateURLModelObserver implementation.
   virtual void OnTemplateURLModelChanged();
 
   // ui::TableModelObserver implementation.
   virtual void OnModelChanged();
   virtual void OnItemsChanged(int start, int length);
   virtual void OnItemsAdded(int start, int length);
   virtual void OnItemsRemoved(int start, int length);
 
@@ skipping 28 matching lines @@
 
   // Gets autocomplete suggestions asychronously for the given string.
   // Called from WebUI.
   void RequestAutocompleteSuggestions(const ListValue* args);
 
   // Called when the 'Always show the bookmarks bar' checkbox is toggled.
   // Notifies any listeners interested in this event.  |args| is ignored.
   void ToggleShowBookmarksBar(const ListValue* args);
 
   // Returns the string ID for the given default browser state.
-  int StatusStringIdForState(ShellIntegration::DefaultBrowserState state);
+  int StatusStringIdForState(ShellIntegration::DefaultWebClientState state);
 
   // Gets the current default browser state, and asynchronously reports it to
   // the WebUI page.
   void UpdateDefaultBrowserState();
 
   // Updates the UI with the given state for the default browser.
   void SetDefaultBrowserUIString(int status_string_id);
 
   // Loads the current set of custom startup pages and reports it to the WebUI.
   void UpdateStartupPages();
 
   // Loads the possible default search engine list and reports it to the WebUI.
   void UpdateSearchEngines();
 
   // Writes the current set of startup pages to prefs.
   void SaveStartupPagesPref();
 
-  scoped_refptr<ShellIntegration::DefaultBrowserWorker> default_browser_worker_;
+  scoped_refptr<ShellIntegration::DefaultBrowserWorker>
+      default_browser_worker_;
 
   StringPrefMember homepage_;
   BooleanPrefMember default_browser_policy_;
 
   TemplateURLModel* template_url_model_;  // Weak.
 
   // TODO(stuartmorgan): Once there are no other clients of
   // CustomHomePagesTableModel, consider changing it to something more like
   // TemplateURLModel.
   scoped_ptr<CustomHomePagesTableModel> startup_custom_pages_table_model_;
   scoped_ptr<OptionsManagedBannerHandler> banner_handler_;
 
   scoped_ptr<AutocompleteController> autocomplete_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserOptionsHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_