Pref service: create service at browser startup

chrome/browser/chrome_content_browser_client.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_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 274 matching lines @@
   void ExposeInterfacesToMediaService(
       service_manager::InterfaceRegistry* registry,
       content::RenderFrameHost* render_frame_host) override;
   void RegisterRenderFrameMojoInterfaces(
       service_manager::InterfaceRegistry* registry,
       content::RenderFrameHost* render_frame_host) override;
   void ExposeInterfacesToGpuProcess(
       service_manager::InterfaceRegistry* registry,
       content::GpuProcessHost* render_process_host) override;
   void RegisterInProcessServices(StaticServiceMap* services) override;
+  void RegisterInProcessServices(content::BrowserContext* browser_context,
+                                 StaticServiceMap* services) override;
   void RegisterOutOfProcessServices(
       OutOfProcessServiceMap* services) override;
   std::unique_ptr<base::Value> GetServiceManifestOverlay(
       base::StringPiece name) override;
   std::vector<content::ContentBrowserClient::ServiceManifestInfo>
   GetExtraServiceManifests() override;
   void OpenURL(content::BrowserContext* browser_context,
                const content::OpenURLParams& params,
                const base::Callback<void(content::WebContents*)>& callback)
       override;
@@ skipping 77 matching lines @@
   // Vector of additional ChromeContentBrowserClientParts.
   // Parts are deleted in the reverse order they are added.
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_