Rename NoGCScope -> NoSafepointScope.

runtime/vm/hash_table_test.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <algorithm>
 #include <cstring>
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 121 matching lines @@
   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.
-    NoGCScope no_gc;
+    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;
@@ skipping 142 matching lines @@
 TEST_CASE(Maps) {
   for (intptr_t initial_capacity = 0;
        initial_capacity < 32;
        ++initial_capacity) {
     TestMap<UnorderedHashMap<TestTraits> >(initial_capacity, false);
     TestMap<EnumIndexHashMap<TestTraits> >(initial_capacity, true);
   }
 }
 
 }  // namespace dart