Rewrite scoped_ptr<T>(NULL) to use the default ctor in chrome/.

chrome/browser/download/download_history_unittest.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 <set>
 #include <vector>
 
 #include "base/rand_util.h"
 #include "base/stl_util.h"
 #include "chrome/browser/download/download_history.h"
@@ skipping 180 matching lines @@
   scoped_ptr<InfoVector> expect_query_downloads_;
   HandleSet remove_downloads_;
   history::DownloadRow create_download_info_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeHistoryAdapter);
 };
 
 class DownloadHistoryTest : public testing::Test {
  public:
   DownloadHistoryTest()
-    : ui_thread_(content::BrowserThread::UI, &loop_),
-      manager_(new content::MockDownloadManager()),
-      history_(NULL),
-      download_history_(NULL),
-      manager_observer_(NULL),
-      item_observer_(NULL),
-      download_created_index_(0) {
-  }
+      : ui_thread_(content::BrowserThread::UI, &loop_),
+        manager_(new content::MockDownloadManager()),
+        history_(NULL),
+        manager_observer_(NULL),
+        item_observer_(NULL),
+        download_created_index_(0) {}
   virtual ~DownloadHistoryTest() {
     STLDeleteElements(&items_);
   }
 
  protected:
   virtual void TearDown() OVERRIDE {
     download_history_.reset();
   }
 
   content::MockDownloadManager& manager() { return *manager_.get(); }
@@ skipping 584 matching lines @@
   item_observer()->OnDownloadUpdated(&item(0));
 
   FinishCreateDownload();
   EXPECT_TRUE(DownloadHistory::IsPersisted(&item(0)));
 
   // ItemAdded should call OnDownloadUpdated, which should detect that the item
   // changed while it was being added and call UpdateDownload immediately.
   info.opened = true;
   ExpectDownloadUpdated(info);
 }