Fix Windows build. I'm wondering, how does gcc accept such code?

src/heap-profiler.cc

 // Copyright 2009 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 174 matching lines @@
 }
 
 
 inline ClustersCoarser::ClusterBackRefs::ClusterBackRefs(
     const JSObjectsCluster& cluster_)
     : cluster(cluster_), refs(kInitialBackrefsListCapacity) {
 }
 
 
 inline ClustersCoarser::ClusterBackRefs::ClusterBackRefs(
-    const ClustersCoarser::ClusterBackRefs::ClusterBackRefs& src)
+    const ClustersCoarser::ClusterBackRefs& src)
     : cluster(src.cluster), refs(src.refs.capacity()) {
   refs.AddAll(src.refs);
 }
 
 
 inline ClustersCoarser::ClusterBackRefs::ClusterBackRefs&
 ClustersCoarser::ClusterBackRefs::operator=(
-    const ClustersCoarser::ClusterBackRefs::ClusterBackRefs& src) {
+    const ClustersCoarser::ClusterBackRefs& src) {
   if (this == &src) return *this;
   cluster = src.cluster;
   refs.Clear();
   refs.AddAll(src.refs);
   return *this;
 }
 
 
 inline int ClustersCoarser::ClusterBackRefs::Compare(
-    const ClustersCoarser::ClusterBackRefs::ClusterBackRefs& a,
-    const ClustersCoarser::ClusterBackRefs::ClusterBackRefs& b) {
+    const ClustersCoarser::ClusterBackRefs& a,
+    const ClustersCoarser::ClusterBackRefs& b) {
   int cmp = JSObjectsCluster::CompareConstructors(a.cluster, b.cluster);
   if (cmp != 0) return cmp;
   if (a.refs.length() < b.refs.length()) return -1;
   if (a.refs.length() > b.refs.length()) return 1;
   for (int i = 0; i < a.refs.length(); ++i) {
     int cmp = JSObjectsCluster::Compare(a.refs[i], b.refs[i]);
     if (cmp != 0) return cmp;
   }
   return 0;
 }
@@ skipping 285 matching lines @@
   js_retainer_profile.PrintStats();
 
   LOG(HeapSampleEndEvent("Heap", "allocated"));
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 
 } }  // namespace v8::internal