Fix ARM build by moving field in Thread

runtime/vm/thread.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_THREAD_H_
 #define VM_THREAD_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
@@ skipping 620 matching lines @@
 
   void InitVMConstants();
 
  private:
   template<class T> T* AllocateReusableHandle();
 
   // Accessed from generated code:
   uword stack_limit_;
   uword stack_overflow_flags_;
   Isolate* isolate_;
-  TimelineStream* dart_stream_;
   Heap* heap_;
   uword top_exit_frame_info_;
   StoreBufferBlock* store_buffer_block_;
   uword vm_tag_;
   TaskKind task_kind_;
   // State that is cached in the TLS for fast access in generated code.
 #define DECLARE_MEMBERS(type_name, member_name, expr, default_init_value)      \
   type_name member_name;
 CACHED_CONSTANTS_LIST(DECLARE_MEMBERS)
 #undef DECLARE_MEMBERS
 
 #define DECLARE_MEMBERS(name)      \
   uword name##_entry_point_;
 RUNTIME_ENTRY_LIST(DECLARE_MEMBERS)
 #undef DECLARE_MEMBERS
 
 #define DECLARE_MEMBERS(returntype, name, ...)      \
   uword name##_entry_point_;
 LEAF_RUNTIME_ENTRY_LIST(DECLARE_MEMBERS)
 #undef DECLARE_MEMBERS
 
+  TimelineStream* dart_stream_;
   OSThread* os_thread_;
   Monitor* thread_lock_;
   Zone* zone_;
   ApiLocalScope* api_reusable_scope_;
   ApiLocalScope* api_top_scope_;
   StackResource* top_resource_;
   LongJumpScope* long_jump_base_;
   int32_t no_callback_scope_depth_;
 #if defined(DEBUG)
   HandleScope* top_handle_scope_;
@@ skipping 91 matching lines @@
 // Disable thread interrupts.
 class DisableThreadInterruptsScope : public StackResource {
  public:
   explicit DisableThreadInterruptsScope(Thread* thread);
   ~DisableThreadInterruptsScope();
 };
 
 }  // namespace dart
 
 #endif  // VM_THREAD_H_