Enable concurrent optimization test after migrating scopes to Thread*

runtime/vm/timeline.h

 // Copyright (c) 2015, 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_TIMELINE_H_
 #define VM_TIMELINE_H_
 
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
 
@@ skipping 210 matching lines @@
 
 // (name, enabled by default).
 #define ISOLATE_TIMELINE_STREAM_LIST(V)                                        \
   V(API, false)                                                                \
   V(Compiler, false)                                                           \
   V(Embedder, false)                                                           \
   V(GC, false)                                                                 \
   V(Isolate, false)                                                            \
 
 
-#define TIMELINE_FUNCTION_COMPILATION_DURATION(isolate, suffix, function)      \
-  TimelineDurationScope tds(isolate,                                           \
-                            isolate->GetCompilerStream(),                      \
+#define TIMELINE_FUNCTION_COMPILATION_DURATION(thread, suffix, function)       \
+  TimelineDurationScope tds(thread,                                            \
+                            thread->isolate()->GetCompilerStream(),            \
                             "Compile" suffix);                                 \
   if (tds.enabled()) {                                                         \
     tds.SetNumArguments(1);                                                    \
     tds.CopyArgument(                                                          \
         0,                                                                     \
         "function",                                                            \
         const_cast<char*>(function.ToLibNamePrefixedQualifiedCString()));      \
   }
 
 
@@ skipping 347 matching lines @@
   TimelineEventBlock* Next();
 
  private:
   TimelineEventBlock* current_;
   TimelineEventRecorder* recorder_;
 };
 
 }  // namespace dart
 
 #endif  // VM_TIMELINE_H_