Cleanup: Convert ASCIIToUTF16("") to string16().

chrome/browser/download/download_manager_unittest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/i18n/number_formatting.h"
@@ skipping 754 matching lines @@
   EXPECT_TRUE(GetActiveDownloadItem(0) == NULL);
   EXPECT_TRUE(observer->hit_state(DownloadItem::IN_PROGRESS));
   EXPECT_FALSE(observer->hit_state(DownloadItem::CANCELLED));
   EXPECT_FALSE(observer->hit_state(DownloadItem::INTERRUPTED));
   EXPECT_TRUE(observer->hit_state(DownloadItem::COMPLETE));
   EXPECT_FALSE(observer->hit_state(DownloadItem::REMOVING));
   EXPECT_TRUE(observer->was_updated());
   EXPECT_FALSE(observer->was_opened());
   EXPECT_FALSE(download->GetFileExternallyRemoved());
   EXPECT_EQ(DownloadItem::COMPLETE, download->GetState());
-  EXPECT_EQ(download_item_model->GetStatusText(), ASCIIToUTF16(""));
+  EXPECT_EQ(download_item_model->GetStatusText(), string16());
 
   EXPECT_TRUE(file_util::PathExists(new_path));
   EXPECT_FALSE(file_util::PathExists(cr_path));
   EXPECT_FALSE(file_util::PathExists(unique_new_path));
   std::string file_contents;
   EXPECT_TRUE(file_util::ReadFileToString(new_path, &file_contents));
   EXPECT_EQ(std::string(kTestData), file_contents);
 }
 
 TEST_F(DownloadManagerTest, MAYBE_DownloadRemoveTest) {
@@ skipping 56 matching lines @@
   EXPECT_TRUE(GetActiveDownloadItem(0) == NULL);
   EXPECT_TRUE(observer->hit_state(DownloadItem::IN_PROGRESS));
   EXPECT_FALSE(observer->hit_state(DownloadItem::CANCELLED));
   EXPECT_FALSE(observer->hit_state(DownloadItem::INTERRUPTED));
   EXPECT_TRUE(observer->hit_state(DownloadItem::COMPLETE));
   EXPECT_FALSE(observer->hit_state(DownloadItem::REMOVING));
   EXPECT_TRUE(observer->was_updated());
   EXPECT_FALSE(observer->was_opened());
   EXPECT_FALSE(download->GetFileExternallyRemoved());
   EXPECT_EQ(DownloadItem::COMPLETE, download->GetState());
-  EXPECT_EQ(download_item_model->GetStatusText(), ASCIIToUTF16(""));
+  EXPECT_EQ(download_item_model->GetStatusText(), string16());
 
   EXPECT_TRUE(file_util::PathExists(new_path));
   EXPECT_FALSE(file_util::PathExists(cr_path));
 
   // Remove the downloaded file.
   ASSERT_TRUE(file_util::Delete(new_path, false));
   download->OnDownloadedFileRemoved();
   message_loop_.RunAllPending();
 
   EXPECT_TRUE(GetActiveDownloadItem(0) == NULL);
   EXPECT_TRUE(observer->hit_state(DownloadItem::IN_PROGRESS));
   EXPECT_FALSE(observer->hit_state(DownloadItem::CANCELLED));
   EXPECT_FALSE(observer->hit_state(DownloadItem::INTERRUPTED));
   EXPECT_TRUE(observer->hit_state(DownloadItem::COMPLETE));
   EXPECT_FALSE(observer->hit_state(DownloadItem::REMOVING));
   EXPECT_TRUE(observer->was_updated());
   EXPECT_FALSE(observer->was_opened());
   EXPECT_TRUE(download->GetFileExternallyRemoved());
   EXPECT_EQ(DownloadItem::COMPLETE, download->GetState());
   EXPECT_EQ(download_item_model->GetStatusText(),
             l10n_util::GetStringUTF16(IDS_DOWNLOAD_STATUS_REMOVED));
 
   EXPECT_FALSE(file_util::PathExists(new_path));
 }