Train wreck reduction.

src/isolate.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1490 matching lines @@
     MaybeObject* e = scheduled_exception();
     if (e->IsFailure() && Failure::cast(e)->IsOutOfMemoryException()) {
       return true;
     }
   }
   return false;
 }
 
 
 Handle<Context> Isolate::native_context() {
-  GlobalObject* global = thread_local_top()->context_->global_object();
-  return Handle<Context>(global->native_context());
+  return Handle<Context>(context()->global_object()->native_context());
 }
 
 
 Handle<Context> Isolate::global_context() {
-  GlobalObject* global = thread_local_top()->context_->global_object();
-  return Handle<Context>(global->global_context());
+  return Handle<Context>(context()->global_object()->global_context());
 }
 
 
 Handle<Context> Isolate::GetCallingNativeContext() {
   JavaScriptFrameIterator it(this);
 #ifdef ENABLE_DEBUGGER_SUPPORT
   if (debug_->InDebugger()) {
     while (!it.done()) {
       JavaScriptFrame* frame = it.frame();
       Context* context = Context::cast(frame->context());
@@ skipping 863 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal