Properly recognize closures when setting breakpoints

runtime/vm/debugger.h

 // Copyright (c) 2012, 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_DEBUGGER_H_
 #define VM_DEBUGGER_H_
 
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 19 matching lines @@
   RawString* SourceUrl();
   intptr_t LineNumber();
 
   void Enable();
   void Disable();
   bool IsEnabled() const { return is_enabled_; }
 
  private:
   void VisitObjectPointers(ObjectPointerVisitor* visitor);
 
+  void set_function(const Function& func);
   void set_next(SourceBreakpoint* value) { next_ = value; }
   SourceBreakpoint* next() const { return this->next_; }
 
   RawFunction* function_;
   intptr_t token_index_;
   intptr_t line_number_;
   bool is_enabled_;
 
   SourceBreakpoint* next_;
 
@@ skipping 219 matching lines @@
   bool ignore_breakpoints_;
 
   friend class SourceBreakpoint;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DEBUGGER_H_