Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/extensions/convert_web_app.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/extensions/convert_web_app.h"
 
 #include <cmath>
 #include <limits>
 #include <string>
 #include <vector>
@@ skipping 172 matching lines @@
   std::string error;
   int extension_flags = Extension::NO_FLAGS;
   if (web_app.is_bookmark_app)
     extension_flags |= Extension::FROM_BOOKMARK;
   scoped_refptr<Extension> extension = Extension::Create(
       temp_dir.path(),
       Manifest::INTERNAL,
       *root,
       extension_flags,
       &error);
-  if (!extension) {
+  if (!extension.get()) {
     LOG(ERROR) << error;
     return NULL;
   }
 
   temp_dir.Take();  // The caller takes ownership of the directory.
   return extension;
 }
 
 }  // namespace extensions