Introduce is_debuggable state bit on function objects

runtime/vm/regexp.cc

 // Copyright (c) 2014, 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.
 
 #include "vm/regexp.h"
 
 #include "vm/dart_entry.h"
 #include "vm/regexp_assembler.h"
 #include "vm/regexp_ast.h"
 #include "vm/unibrow-inl.h"
@@ skipping 5110 matching lines @@
   fn.SetParameterNameAt(0, Symbols::string_param());
   fn.SetParameterTypeAt(1, Type::Handle(isolate, Type::DynamicType()));
   fn.SetParameterNameAt(1, Symbols::start_index_param());
   fn.set_result_type(Type::Handle(isolate, Type::ArrayType()));
 
   // Cache the result.
   regexp.set_function(specialization_cid, fn);
 
   fn.set_regexp(regexp);
   fn.set_regexp_cid(specialization_cid);
+  fn.set_is_debuggable(false);
 
   // The function is compiled lazily during the first call.
 }
 
 
 RawJSRegExp* RegExpEngine::CreateJSRegExp(Isolate* isolate,
                                           const String& pattern,
                                           bool multi_line,
                                           bool ignore_case) {
   const JSRegExp& regexp = JSRegExp::Handle(JSRegExp::New(0));
@@ skipping 19 matching lines @@
   CreateSpecializedFunction(isolate, regexp, kOneByteStringCid, owner);
   CreateSpecializedFunction(isolate, regexp, kTwoByteStringCid, owner);
   CreateSpecializedFunction(isolate, regexp, kExternalOneByteStringCid, owner);
   CreateSpecializedFunction(isolate, regexp, kExternalTwoByteStringCid, owner);
 
   return regexp.raw();
 }
 
 
 }  // namespace dart