Make HashMap a template class to specify the allocation policy.

src/scopes.h

 // Copyright 2012 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
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 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_SCOPES_H_
 #define V8_SCOPES_H_
 
 #include "ast.h"
-#include "hashmap.h"
+#include "zone.h"
 
 namespace v8 {
 namespace internal {
 
 class CompilationInfo;
 
 
 // A hash map to support fast variable declaration and lookup.
-class VariableMap: public HashMap {
+class VariableMap: public ZoneHashMap {
  public:
   VariableMap();
 
   virtual ~VariableMap();
 
   Variable* Declare(Scope* scope,
                     Handle<String> name,
                     VariableMode mode,
                     bool is_valid_lhs,
                     Variable::Kind kind,
@@ skipping 529 matching lines @@
   }
 
   void SetDefaults(ScopeType type,
                    Scope* outer_scope,
                    Handle<ScopeInfo> scope_info);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_SCOPES_H_