Remove uses of base::hash_map from //chrome

chrome/browser/extensions/api/downloads/downloads_api_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.
 
 // Disable everything on windows only. http://crbug.com/306144
 #ifndef OS_WIN
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 1241 matching lines @@
   base::DictionaryValue* item1_value = NULL;
   ASSERT_TRUE(result_list->GetDictionary(0, &item0_value));
   ASSERT_TRUE(result_list->GetDictionary(1, &item1_value));
   std::string item0_name, item1_name;
   ASSERT_TRUE(item0_value->GetString("filename", &item0_name));
   ASSERT_TRUE(item1_value->GetString("filename", &item1_name));
   ASSERT_GT(items[0]->GetTargetFilePath().value(),
             items[1]->GetTargetFilePath().value());
   // The order of results when orderBy is empty is unspecified. When there are
   // no sorters, DownloadQuery does not call sort(), so the order of the results
-  // depends on the order of the items in base::hash_map<uint32_t,...>
-  // DownloadManagerImpl::downloads_, which is unspecified and differs between
-  // libc++ and libstdc++. http://crbug.com/365334
+  // depends on the order of the items in DownloadManagerImpl::downloads_,
+  //  which is unspecified and differs between libc++ and libstdc++.
+  //  http://crbug.com/365334

[chrisha, 2017/05/23 20:07:59]

Fix leading spaces in this line and the one above.

[brettw, 2017/06/28 23:58:39]

Done.

 }
 
 // Test the |danger| option for search().
 IN_PROC_BROWSER_TEST_F(DownloadExtensionTest,
     DownloadExtensionTest_SearchDanger) {
   const HistoryDownloadInfo kHistoryInfo[] = {
     { FILE_PATH_LITERAL("zzz"),
       DownloadItem::COMPLETE,
       content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT },
     { FILE_PATH_LITERAL("baz"),
@@ skipping 3030 matching lines @@
   EXPECT_EQ(downloads::FILENAME_CONFLICT_ACTION_PROMPT, conflict_action);
   EXPECT_FALSE(warnings.empty());
   EXPECT_EQ(Warning::kDownloadFilenameConflict,
             warnings.begin()->warning_type());
   EXPECT_EQ("incumbent", warnings.begin()->extension_id());
 }
 
 }  // namespace extensions
 
 #endif  // http://crbug.com/306144