Convert ProtocolHandlerRegistry to be a ProfileKeyedService.

chrome/browser/custom_handlers/protocol_handler_registry.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_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
 #define CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/common/custom_handlers/protocol_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_job.h"
 
 // This is where handlers for protocols registered with
 // navigator.registerProtocolHandler() are registered. Each Profile owns an
 // instance of this class, which is initialized on browser start through
 // Profile::InitRegisteredProtocolHandlers(), and they should be the only
 // instances of this class.
 
-class ProtocolHandlerRegistry
-    : public base::RefCountedThreadSafe<
-          ProtocolHandlerRegistry, content::BrowserThread::DeleteOnIOThread> {
+class ProtocolHandlerRegistry : public ProfileKeyedService {
+
  public:
   class DefaultClientObserver
       : public ShellIntegration::DefaultWebClientObserver {
    public:
     explicit DefaultClientObserver(ProtocolHandlerRegistry* registry);
     virtual ~DefaultClientObserver();
 
     // Get response from the worker regarding whether Chrome is the default
     // handler for the protocol.
     virtual void SetDefaultWebClientUIState(
@@ skipping 66 matching lines @@
   // Returns a list of protocol handlers that can be replaced by the given
   // handler.
   ProtocolHandlerList GetReplacedHandlers(const ProtocolHandler& handler) const;
 
   // Clears the default for the provided protocol.
   void ClearDefault(const std::string& scheme);
 
   // Returns true if this handler is the default handler for its protocol.
   bool IsDefault(const ProtocolHandler& handler) const;
 
+  // Initializes default protocol setttings and loads them from prefs.
+  void InitProtocolSettings();
+
   // Loads a user's registered protocol handlers.
   void Load();
 
   // Returns the offset in the list of handlers for a protocol of the default
   // handler for that protocol.
   int GetHandlerIndex(const std::string& scheme) const;
 
   // Get the list of protocol handlers for the given scheme.
   ProtocolHandlerList GetHandlersFor(const std::string& scheme) const;
 
@@ skipping 159 matching lines @@
   bool is_loaded_;
 
   DefaultClientObserverList default_client_observers_;
 
   // Copy of default_handlers_ that is only accessed on the IO thread.
   ProtocolHandlerMap default_handlers_io_;
 
   DISALLOW_COPY_AND_ASSIGN(ProtocolHandlerRegistry);
 };
 #endif  // CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_