Use a custom Struct for stack trace storage

src/factory.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "src/isolate.h"
 #include "src/messages.h"
 #include "src/type-feedback-vector.h"
@@ skipping 274 matching lines @@
   // the old generation).
   Handle<Struct> NewStruct(InstanceType type);
 
   Handle<AliasedArgumentsEntry> NewAliasedArgumentsEntry(
       int aliased_context_slot);
 
   Handle<AccessorInfo> NewAccessorInfo();
 
   Handle<Script> NewScript(Handle<String> source);
 
+  Handle<StackTraceFrame> NewStackTraceFrame();
+
   // Foreign objects are pretenured when allocated by the bootstrapper.
   Handle<Foreign> NewForeign(Address addr,
                              PretenureFlag pretenure = NOT_TENURED);
 
   // Allocate a new foreign object.  The foreign is pretenured (allocated
   // directly in the old generation).
   Handle<Foreign> NewForeign(const AccessorDescriptor* foreign);
 
   Handle<ByteArray> NewByteArray(int length,
                                  PretenureFlag pretenure = NOT_TENURED);
@@ skipping 445 matching lines @@
                                      FunctionMode function_mode);
 
   void SetStrictFunctionInstanceDescriptor(Handle<Map> map,
                                            FunctionMode function_mode);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FACTORY_H_