Remove uses of base::hash_map from //chrome

chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc

Index: chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc b/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
index 814220b40b6b873a7ae2cc7ea3c3e1ca44f9861f..e0ea089755d21de1972c5c3fb239c088afbcdf80 100644
--- a/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
+++ b/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
@@ -104,8 +104,8 @@ void ExpectEquivalent(const std::map<Key, Value>& left,
 }
 
 template <typename Key, typename Value>
-void ExpectEquivalent(const base::hash_map<Key, Value>& left,
-                      const base::hash_map<Key, Value>& right) {
+void ExpectEquivalent(const std::unordered_map<Key, Value>& left,
+                      const std::unordered_map<Key, Value>& right) {
   // Convert from a hash container to an ordered container for comparison.
   ExpectEquivalentMaps(std::map<Key, Value>(left.begin(), left.end()),
                        std::map<Key, Value>(right.begin(), right.end()));
@@ -136,8 +136,8 @@ void ExpectEquivalent(const std::set<Value, Comparator>& left,
 }
 
 template <typename Value>
-void ExpectEquivalent(const base::hash_set<Value>& left,
-                      const base::hash_set<Value>& right) {
+void ExpectEquivalent(const std::unordered_set<Value>& left,
+                      const std::unordered_set<Value>& right) {
   // Convert from a hash container to an ordered container for comparison.
   return ExpectEquivalentSets(std::set<Value>(left.begin(), left.end()),
                               std::set<Value>(right.begin(), right.end()));