Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

chrome/browser/extensions/crx_installer.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_CRX_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 176 matching lines @@
   }
 
   void set_install_wait_for_idle(bool val) {
     install_wait_for_idle_ = val;
   }
 
   bool did_handle_successfully() const { return did_handle_successfully_; }
 
   Profile* profile() { return installer_.profile(); }
 
-  const Extension* extension() { return installer_.extension(); }
+  const Extension* extension() { return installer_.extension().get(); }
 
  private:
   friend class ::ExtensionServiceTest;
   friend class ExtensionUpdaterTest;
   friend class ExtensionCrxInstallerTest;
 
   CrxInstaller(base::WeakPtr<ExtensionService> service_weak,
                ExtensionInstallPrompt* client,
                const WebstoreInstaller::Approval* approval);
   virtual ~CrxInstaller();
@@ skipping 186 matching lines @@
 
   // Gives access to common methods and data of an extension installer.
   ExtensionInstaller installer_;
 
   DISALLOW_COPY_AND_ASSIGN(CrxInstaller);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_