Traverse inlined frames lazily when printing the stacktrace.

runtime/vm/object_store.cc

 // Copyright (c) 2013, 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 "vm/object_store.h"
 
 #include "vm/exceptions.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
@@ skipping 111 matching lines @@
   set_stack_overflow(Instance::Cast(result));
 
   result = DartLibraryCalls::InstanceCreate(library,
                                             Symbols::OutOfMemoryError(),
                                             Symbols::Dot(),
                                             Object::empty_array());
   if (result.IsError()) {
     return false;
   }
   set_out_of_memory(Instance::Cast(result));
-  const Array& func_array = Array::Handle(
-      isolate,
-      Array::New(Stacktrace::kPreallocatedStackdepth, Heap::kOld));
   const Array& code_array = Array::Handle(
       isolate,
       Array::New(Stacktrace::kPreallocatedStackdepth, Heap::kOld));
   const Array& pc_offset_array = Array::Handle(
       isolate,
       Array::New(Stacktrace::kPreallocatedStackdepth, Heap::kOld));
-  result = Stacktrace::New(func_array, code_array, pc_offset_array);
+  result = Stacktrace::New(code_array, pc_offset_array);
   set_preallocated_stack_trace(Stacktrace::Cast(result));
 
   return true;
 }
 
 
 void ObjectStore::InitKeywordTable() {
   // Set up the keywords symbol array so that we can access it while scanning.
   Array& keywords = Array::Handle(keyword_symbols());
   ASSERT(keywords.IsNull());
   keywords = Array::New(Token::numKeywords, Heap::kOld);
   ASSERT(!keywords.IsError() && !keywords.IsNull());
   set_keyword_symbols(keywords);
 }
 
 }  // namespace dart