Remove uses of base::hash_map from //chrome

chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc

Index: chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
diff --git a/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc b/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
index 49d5ba8cdd77eeb04fdadccf36cdf218a52ba09f..f1b6678df3a3e9a5021c9506b64c36b33f5ac127 100644
--- a/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
+++ b/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
@@ -1259,9 +1259,9 @@ IN_PROC_BROWSER_TEST_F(DownloadExtensionTest,
             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().