Migrate stack resource unwinding to Thread.

runtime/vm/cha.h

 // 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.
 
 #ifndef VM_CHA_H_
 #define VM_CHA_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 #include "vm/thread.h"
 
 namespace dart {
 
 class Class;
 class Function;
 template <typename T> class ZoneGrowableArray;
 class String;
 
 class CHA : public StackResource {
  public:
   explicit CHA(Thread* thread)
-      : StackResource(thread->isolate()),
+      : StackResource(thread),
         thread_(thread),
         leaf_classes_(thread->zone(), 1),
         previous_(thread->cha()) {
     thread->set_cha(this);
   }
 
   ~CHA() {
     ASSERT(thread_->cha() == this);
     thread_->set_cha(previous_);
   }
@@ skipping 19 matching lines @@
 
  private:
   Thread* thread_;
   GrowableArray<Class*> leaf_classes_;
   CHA* previous_;
 };
 
 }  // namespace dart
 
 #endif  // VM_CHA_H_