Fix source position for stack traces with optimized top function.

runtime/vm/stack_frame.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_STACK_FRAME_H_
 #define VM_STACK_FRAME_H_
 
 #include "vm/allocation.h"
 #include "vm/object.h"
 #include "vm/stub_code.h"
@@ skipping 218 matching lines @@
 // Iterator for iterating over all inlined dart functions in an optimized
 // dart frame (the iteration includes the function that is inlining the
 // other functions).
 class InlinedFunctionsInDartFrameIterator : public ValueObject {
  public:
   explicit InlinedFunctionsInDartFrameIterator(StackFrame* frame);
   RawFunction* GetNextFunction(uword* pc);
 
  private:
   intptr_t index_;
-  StackFrame* frame_;
-  Function& func_;
-  DeoptInfo& deopt_info_;
+  GrowableArray<DeoptInstr*> deopt_instructions_;
   Array& object_table_;
 
   DISALLOW_COPY_AND_ASSIGN(InlinedFunctionsInDartFrameIterator);
 };
 
 }  // namespace dart
 
 #endif  // VM_STACK_FRAME_H_