Move reusable handles from isolate to thread.

runtime/vm/profiler.h

 // 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.
 
 #ifndef VM_PROFILER_H_
 #define VM_PROFILER_H_
 
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
 #include "vm/code_observers.h"
@@ skipping 487 matching lines @@
   bool truncated() const { return truncated_; }
   void set_truncated(bool truncated) { truncated_ = truncated; }
 
   // Was the first frame in the stack trace executing?
   bool first_frame_executing() const { return first_frame_executing_; }
   void set_first_frame_executing(bool first_frame_executing) {
     first_frame_executing_ = first_frame_executing;
   }
 
  private:
-  void FixupCaller(Isolate* isolate,
+  void FixupCaller(Thread* thread,
                    Isolate* vm_isolate,
                    uword pc_marker,
                    uword* stack_buffer);
 
   void CheckForMissingDartFrame(Isolate* isolate,
                                 Isolate* vm_isolate,
                                 const Code& code,
                                 uword pc_marker,
                                 uword* stack_buffer);
 
@@ skipping 37 matching lines @@
 
  private:
   ZoneGrowableArray<ProcessedSample*> samples_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer);
 };
 
 }  // namespace dart
 
 #endif  // VM_PROFILER_H_