Mark optimized code that used CHA for optimization so that lazy class 'finalization' does not inval…

runtime/vm/isolate.cc

 // Copyright (c) 2013, 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/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "lib/mirrors.h"
@@ skipping 294 matching lines @@
       message_handler_(NULL),
       spawn_state_(NULL),
       is_runnable_(false),
       gc_prologue_callbacks_(),
       gc_epilogue_callbacks_(),
       defer_finalization_count_(0),
       deopt_context_(NULL),
       stacktrace_(NULL),
       stack_frame_index_(-1),
       object_histogram_(NULL),
+      cha_used_(false),
       object_id_ring_(NULL),
       profiler_data_(NULL),
       REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_INITIALIZERS)
       reusable_handles_() {
   if (FLAG_print_object_histogram && (Dart::vm_isolate() != NULL)) {
     object_histogram_ = new ObjectHistogram(this);
   }
 }
 #undef REUSABLE_HANDLE_INITIALIZERS
 
@@ skipping 645 matching lines @@
   return func.raw();
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(isolate());
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart