Implement breakpoint for closure calls

runtime/vm/stub_code.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_STUB_CODE_H_
 #define VM_STUB_CODE_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 
@@ skipping 13 matching lines @@
   V(PrintStopMessage)                                                          \
   V(CallNativeCFunction)                                                       \
   V(AllocateArray)                                                             \
   V(CallNoSuchMethodFunction)                                                  \
   V(InstanceFunctionLookup)                                                    \
   V(CallStaticFunction)                                                        \
   V(CallClosureFunction)                                                       \
   V(FixCallersTarget)                                                          \
   V(Deoptimize)                                                                \
   V(DeoptimizeLazy)                                                            \
+  V(BreakpointClosure)                                                         \
   V(BreakpointStatic)                                                          \
   V(BreakpointReturn)                                                          \
   V(Subtype1TestCache)                                                         \
   V(Subtype2TestCache)                                                         \
   V(Subtype3TestCache)                                                         \
   V(GetStackPointer)                                                           \
   V(JumpToExceptionHandler)                                                    \
   V(IdenticalWithNumberCheck)                                                  \
 
 // Is it permitted for the stubs above to refer to Object::null(), which is
@@ skipping 149 matching lines @@
   static void GenerateNArgsCheckInlineCacheStub(Assembler* assembler,
                                                 intptr_t num_args);
   static void GenerateUsageCounterIncrement(Assembler* assembler,
                                             Register temp_reg);
   static void GenerateOptimizedUsageCounterIncrement(Assembler* assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_STUB_CODE_H_