Move small c/b/extensions classes into extensions namespace no.1

chrome/browser/ui/webui/extensions/extension_activity_ui.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/ui/webui/extensions/extension_activity_ui.h"
 
 #include "base/bind.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
@@ skipping 34 matching lines @@
   ChromeURLDataManager::AddDataSource(profile, new SharedResourcesDataSource());
 
   // Callback handlers.
   web_ui->RegisterMessageCallback("requestExtensionData",
       base::Bind(&ExtensionActivityUI::HandleRequestExtensionData,
                  base::Unretained(this)));
 }
 
 ExtensionActivityUI::~ExtensionActivityUI() {
   if (extension_)
-    ExtensionActivityLog::GetInstance()->RemoveObserver(extension_, this);
+    extensions::ActivityLog::GetInstance()->RemoveObserver(extension_, this);
 }
 
 void ExtensionActivityUI::HandleRequestExtensionData(
     const base::ListValue* args) {
   DCHECK_EQ(1U, args->GetSize());
 
   std::string extension_id;
   if (!args->GetString(0, &extension_id))
     return;
 
@@ skipping 15 matching lines @@
   extension_data->SetString("version", extension_->version()->GetString());
   extension_data->SetString("description", extension_->description());
   extension_data->SetString("icon", icon.spec());
 
   DictionaryValue result;
   result.Set("extension", extension_data);
 
   web_ui()->CallJavascriptFunction("extension_activity.handleExtensionData",
                                    result);
 
-  ExtensionActivityLog::GetInstance()->AddObserver(extension_, this);
+  extensions::ActivityLog::GetInstance()->AddObserver(extension_, this);
 }
 
 void ExtensionActivityUI::OnExtensionActivity(
       const extensions::Extension* extension,
-      ExtensionActivityLog::Activity activity,
+      extensions::ActivityLog::Activity activity,
       const std::string& msg) {
   DictionaryValue result;
   result.SetInteger("activity", activity);
   result.SetString("message", msg);
   web_ui()->CallJavascriptFunction("extension_activity.handleExtensionActivity",
                                    result);
 }