Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/autocomplete/extension_app_provider.cc

 // 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.
 
 #include "chrome/browser/autocomplete/extension_app_provider.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/strings/string16.h"
@@ skipping 28 matching lines @@
                  content::Source<Profile>(profile_->GetOriginalProfile()));
   RefreshAppList();
 }
 
 // static.
 void ExtensionAppProvider::LaunchAppFromOmnibox(
     const AutocompleteMatch& match,
     Profile* profile,
     WindowOpenDisposition disposition) {
   ExtensionService* service =
-      extensions::ExtensionSystemFactory::GetForProfile(profile)->
-      extension_service();
+      extensions::ExtensionSystem::Get(profile)->extension_service();
   const extensions::Extension* extension =
       service->GetInstalledApp(match.destination_url);
   // While the Omnibox popup is open, the extension can be updated, changing
   // its URL and leaving us with no extension being found. In this case, we
   // ignore the request.
   if (!extension)
     return;
 
   CoreAppLauncherHandler::RecordAppLaunchType(
       extension_misc::APP_LAUNCH_OMNIBOX_APP,
@@ skipping 82 matching lines @@
           input, *app, name_match_index, url_match_index));
     }
   }
 }
 
 ExtensionAppProvider::~ExtensionAppProvider() {
 }
 
 void ExtensionAppProvider::RefreshAppList() {
   ExtensionService* extension_service =
-      extensions::ExtensionSystemFactory::GetForProfile(profile_)->
-      extension_service();
+      extensions::ExtensionSystem::Get(profile_)->extension_service();
   if (!extension_service)
     return;  // During testing, there is no extension service.
   const extensions::ExtensionSet* extensions = extension_service->extensions();
   extension_apps_.clear();
   for (extensions::ExtensionSet::const_iterator iter = extensions->begin();
        iter != extensions->end(); ++iter) {
     const extensions::Extension* app = iter->get();
     if (!app->ShouldDisplayInAppLauncher())
       continue;
     // Note: Apps that appear in the NTP only are not added here since this
@@ skipping 54 matching lines @@
     history::URLRow info;
     url_db->GetRowForURL(url, &info);
     type_count_boost =
         400 * (1.0 - (std::pow(static_cast<double>(2), -info.typed_count())));
   }
   int relevance = 575 + static_cast<int>(type_count_boost) +
                         static_cast<int>(fraction_boost);
   DCHECK_LE(relevance, kMaxRelevance);
   return relevance;
 }