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

chrome/browser/extensions/extension_disabled_ui_browsertest.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 "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
@@ skipping 69 matching lines @@
       int expected_change) {
     size_t size_before = service_->extensions()->size();
     if (UpdateExtension(extension->id(), crx_path, expected_change))
       return NULL;
     BrowserThread::GetBlockingPool()->FlushForTesting();
     base::RunLoop().RunUntilIdle();
     EXPECT_EQ(size_before + expected_change, service_->extensions()->size());
     if (service_->disabled_extensions()->size() != 1u)
       return NULL;
 
-    return *service_->disabled_extensions()->begin();
+    return service_->disabled_extensions()->begin()->get();
   }
 
   // Helper function to install an extension and upgrade it to a version
   // requiring additional permissions. Returns the new disabled Extension.
   const Extension* InstallAndUpdateIncreasingPermissionsExtension() {
     const Extension* extension = InstallIncreasingPermissionExtensionV1();
     extension = UpdateIncreasingPermissionExtension(extension, path_v2_, -1);
     return extension;
   }
 
@@ skipping 114 matching lines @@
   base::RunLoop().RunUntilIdle();
 
   extension = service_->GetExtensionById(extension_id, true);
   ASSERT_TRUE(extension);
   EXPECT_EQ("2", extension->VersionString());
   EXPECT_EQ(1u, service_->disabled_extensions()->size());
   EXPECT_EQ(Extension::DISABLE_PERMISSIONS_INCREASE,
             service_->extension_prefs()->GetDisableReasons(extension_id));
   EXPECT_TRUE(GetExtensionDisabledGlobalError());
 }