Enable ES6 Map and Set by default

test/cctest/test-heap-profiler.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 476 matching lines @@
   CHECK_EQ(a->GetType(), v8::HeapGraphNode::kSymbol);
   CHECK_EQ(v8_str("symbol"), a->GetName());
   const v8::HeapGraphNode* name =
       GetProperty(a, v8::HeapGraphEdge::kInternal, "name");
   CHECK_NE(NULL, name);
   CHECK_EQ(v8_str("mySymbol"), name->GetName());
 }
 
 
 TEST(HeapSnapshotWeakCollection) {
-  i::FLAG_harmony_collections = true;
-
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
   v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "k = {}; v = {}; s = 'str';\n"
       "ws = new WeakSet(); ws.add(k); ws.add(v); ws[s] = s;\n"
       "wm = new WeakMap(); wm.set(k, v); wm[s] = s;\n");
   const v8::HeapSnapshot* snapshot =
       heap_profiler->TakeHeapSnapshot(v8_str("WeakCollections"));
@@ skipping 54 matching lines @@
   }
   CHECK_EQ(2, weak_entries);
   const v8::HeapGraphNode* wm_s =
       GetProperty(wm, v8::HeapGraphEdge::kProperty, "str");
   CHECK_NE(NULL, wm_s);
   CHECK_EQ(static_cast<int>(s->GetId()), static_cast<int>(wm_s->GetId()));
 }
 
 
 TEST(HeapSnapshotCollection) {
-  i::FLAG_harmony_collections = true;
-
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
   v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "k = {}; v = {}; s = 'str';\n"
       "set = new Set(); set.add(k); set.add(v); set[s] = s;\n"
       "map = new Map(); map.set(k, v); map[s] = s;\n");
   const v8::HeapSnapshot* snapshot =
       heap_profiler->TakeHeapSnapshot(v8_str("Collections"));
@@ skipping 2175 matching lines @@
   map.AddRange(ToAddress(0x180), 0x80, 6U);
   map.AddRange(ToAddress(0x180), 0x80, 7U);
   CHECK_EQ(7, map.GetTraceNodeId(ToAddress(0x180)));
   CHECK_EQ(5, map.GetTraceNodeId(ToAddress(0x200)));
   CHECK_EQ(3, static_cast<int>(map.size()));
 
   map.Clear();
   CHECK_EQ(0, static_cast<int>(map.size()));
   CHECK_EQ(0, map.GetTraceNodeId(ToAddress(0x400)));
 }