Remove some uses of STL map.

runtime/vm/hash_table_test.cc

Index: runtime/vm/hash_table_test.cc
diff --git a/runtime/vm/hash_table_test.cc b/runtime/vm/hash_table_test.cc
index 158af48ab55e08e88c7ff32bff74ffa2a7eb2155..2d597b1068aad6bb102d57ce673a733a973a183e 100644
--- a/runtime/vm/hash_table_test.cc
+++ b/runtime/vm/hash_table_test.cc
@@ -122,34 +122,6 @@ TEST_CASE(HashTable) {
 }
 
 
-TEST_CASE(EnumIndexHashMap) {
-  typedef EnumIndexHashMap<TestTraits> Table;
-  Table table(HashTables::New<Table>(5));
-  table.UpdateOrInsert(String::Handle(String::New("a")),
-                       String::Handle(String::New("A")));
-  EXPECT(table.ContainsKey("a"));
-  table.UpdateValue("a", String::Handle(String::New("AAA")));
-  String& a_value = String::Handle();
-  a_value ^= table.GetOrNull("a");
-  EXPECT(a_value.Equals("AAA"));
-  Object& null_value = Object::Handle(table.GetOrNull("0"));
-  EXPECT(null_value.IsNull());
-
-  // Test on-demand allocation of a new key object using NewKey in traits.
-  String& b_value = String::Handle();
-  b_value ^=
-      table.InsertNewOrGetValue("b", String::Handle(String::New("BBB")));
-  EXPECT(b_value.Equals("BBB"));
-  {
-    // When the key is already present, there should be no allocation.
-    NoSafepointScope no_safepoint;
-    b_value ^= table.InsertNewOrGetValue("b", a_value);
-    EXPECT(b_value.Equals("BBB"));
-  }
-  table.Release();
-}
-
-
 std::string ToStdString(const String& str) {
   EXPECT(str.IsOneByteString());
   std::string result;
@@ -290,7 +262,6 @@ TEST_CASE(Sets) {
        initial_capacity < 32;
        ++initial_capacity) {
     TestSet<UnorderedHashSet<TestTraits> >(initial_capacity, false);
-    TestSet<EnumIndexHashSet<TestTraits> >(initial_capacity, true);
   }
 }
 
@@ -300,7 +271,6 @@ TEST_CASE(Maps) {
        initial_capacity < 32;
        ++initial_capacity) {
     TestMap<UnorderedHashMap<TestTraits> >(initial_capacity, false);
-    TestMap<EnumIndexHashMap<TestTraits> >(initial_capacity, true);
   }
 }