Move small c/b/extensions classes into extensions namespace no.2

chrome/browser/extensions/startup_helper.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_EXTENSIONS_EXTENSIONS_STARTUP_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSIONS_STARTUP_H_
+#ifndef CHROME_BROWSER_EXTENSIONS_STARTUP_HELPER_H_
+#define CHROME_BROWSER_EXTENSIONS_STARTUP_HELPER_H_
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/pack_extension_job.h"
 
 class CommandLine;
 class Profile;
 
+namespace extensions {
+
 // Initialization helpers for various Extension startup actions.
-class ExtensionsStartupUtil : public PackExtensionJob::Client {
+class StartupHelper : public PackExtensionJob::Client {
  public:
-  ExtensionsStartupUtil();
-  virtual ~ExtensionsStartupUtil();
+  StartupHelper();
+  virtual ~StartupHelper();
 
   virtual void OnPackSuccess(const FilePath& crx_path,
                              const FilePath& output_private_key_path) OVERRIDE;
-  virtual void OnPackFailure(
-      const std::string& error_message,
-      extensions::ExtensionCreator::ErrorType type) OVERRIDE;
+  virtual void OnPackFailure(const std::string& error_message,
+                             ExtensionCreator::ErrorType type) OVERRIDE;
 
   // Handle --pack-extension flag from the |cmd_line| by packing the specified
   // extension. Returns false if the pack job failed.
   bool PackExtension(const CommandLine& cmd_line);
 
   // Handle --uninstall-extension flag from the |cmd_line| by uninstalling the
   // specified extension from |profile|. Returns false if the uninstall job
   // could not be started.
   bool UninstallExtension(const CommandLine& cmd_line, Profile* profile);
 
  private:
   scoped_refptr<PackExtensionJob> pack_job_;
   bool pack_job_succeeded_;
 
-  DISALLOW_COPY_AND_ASSIGN(ExtensionsStartupUtil);
+  DISALLOW_COPY_AND_ASSIGN(StartupHelper);
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSIONS_STARTUP_H_
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_STARTUP_HELPER_H_