Deoptimize functions before 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 218 matching lines @@
                             const String& field_name);
 
  private:
   enum ResumeAction {
     kContinue,
     kStepOver,
     kStepInto,
     kStepOut
   };
 
-  void InstrumentForStepping(const Function &target_function);
+  void EnsureFunctionIsDeoptimized(const Function& func);
+  void InstrumentForStepping(const Function& target_function);
   SourceBreakpoint* SetBreakpoint(const Function& target_function,
                                   intptr_t token_index);
   void RemoveInternalBreakpoints();
   void RemoveCodeBreakpoints(SourceBreakpoint* src_bpt);
   void RegisterSourceBreakpoint(SourceBreakpoint* bpt);
   void RegisterCodeBreakpoint(CodeBreakpoint* bpt);
   SourceBreakpoint* GetSourceBreakpoint(const Function& func,
                                         intptr_t token_index);
   CodeBreakpoint* MakeCodeBreakpoint(const Function& func,
                                      intptr_t token_index);
@@ skipping 18 matching lines @@
   bool ignore_breakpoints_;
 
   friend class SourceBreakpoint;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DEBUGGER_H_