Stop/restart compilation timer when running Dart code from within the parser. SMall perfromance fix.

runtime/vm/object.cc

 // 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.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 10837 matching lines @@
 }
 
 
 intptr_t ICData::TestEntryLength() const {
   return TestEntryLengthFor(num_args_tested());
 }
 
 
 intptr_t ICData::NumberOfChecks() const {
   // Do not count the sentinel;
-  return (Array::Handle(ic_data()).Length() / TestEntryLength()) - 1;
+  return (Smi::Value(ic_data()->ptr()->length_) / TestEntryLength()) - 1;
 }
 
 
 void ICData::WriteSentinel(const Array& data) const {
   ASSERT(!data.IsNull());
   for (intptr_t i = 1; i <= TestEntryLength(); i++) {
     data.SetAt(data.Length() - i, smi_illegal_cid());
   }
 }
 
@@ skipping 6766 matching lines @@
   return "_MirrorReference";
 }
 
 
 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const {
   Instance::PrintToJSONStream(stream, ref);
 }
 
 
 }  // namespace dart