Debugger: use debug break slots to break at function exit.

src/objects-debug.cc

 // Copyright 2012 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.
 
 #include "src/v8.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/heap/objects-visiting.h"
 #include "src/jsregexp.h"
@@ skipping 1011 matching lines @@
         CHECK(e->IsUndefined());
       }
     }
   }
 }
 
 
 void DebugInfo::DebugInfoVerify() {
   CHECK(IsDebugInfo());
   VerifyPointer(shared());
-  VerifyPointer(original_code());
   VerifyPointer(code());
   VerifyPointer(break_points());
 }
 
 
 void BreakPointInfo::BreakPointInfoVerify() {
   CHECK(IsBreakPointInfo());
   code_position()->SmiVerify();
   source_position()->SmiVerify();
   statement_position()->SmiVerify();
@@ skipping 229 matching lines @@
                          : it.rinfo()->target_object();
     CHECK(!CanLeak(target, heap, skip_weak_cell));
   }
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8