Move no_callback_scope_depth_ and cha_ from isolate -> thread

runtime/vm/thread.cc

 // 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.
 
 #include "vm/thread.h"
 
 #include "vm/growable_array.h"
 #include "vm/isolate.h"
 #include "vm/lockers.h"
 #include "vm/log.h"
@@ skipping 177 matching lines @@
       thread_interrupt_data_(NULL),
       isolate_(NULL),
       heap_(NULL),
       store_buffer_block_(NULL),
       log_(new class Log()),
       deopt_id_(0),
       vm_tag_(0),
       REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_INITIALIZERS)
       REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_SCOPE_INIT)
       reusable_handles_(),
+      cha_(NULL),
+      no_callback_scope_depth_(0),
       thread_list_next_(NULL) {
   ClearState();
 
 #define DEFAULT_INIT(type_name, member_name, init_expr, default_init_value)    \
   member_name = default_init_value;
 CACHED_CONSTANTS_LIST(DEFAULT_INIT)
 #undef DEFAULT_INIT
 
 #define DEFAULT_INIT(name)                                                     \
   name##_entry_point_ = 0;
@@ skipping 181 matching lines @@
 }
 
 
 void Thread::StoreBufferAcquire() {
   store_buffer_block_ = isolate()->store_buffer()->PopNonFullBlock();
 }
 
 
 CHA* Thread::cha() const {
   ASSERT(isolate_ != NULL);
-  return isolate_->cha_;
+  return cha_;
 }
 
 
 void Thread::set_cha(CHA* value) {
   ASSERT(isolate_ != NULL);
-  isolate_->cha_ = value;
+  cha_ = value;
 }
 
 
 Log* Thread::log() const {
   return log_;
 }
 
 
 template<class C>
 C* Thread::AllocateReusableHandle() {
@@ skipping 110 matching lines @@
 Thread* ThreadIterator::Next() {
   ASSERT(Thread::thread_list_lock_ != NULL);
   ASSERT(Thread::thread_list_lock_->IsOwnedByCurrentThread());
   Thread* current = next_;
   next_ = next_->thread_list_next_;
   return current;
 }
 
 
 }  // namespace dart