some random isolate threading

src/bootstrapper.h

 // Copyright 2006-2008 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 26 matching lines @@
 
 // A SourceCodeCache uses a FixedArray to store pairs of
 // (AsciiString*, JSFunction*), mapping names of native code files
 // (runtime.js, etc.) to precompiled functions. Instead of mapping
 // names to functions it might make sense to let the JS2C tool
 // generate an index for each native JS file.
 class SourceCodeCache BASE_EMBEDDED {
  public:
   explicit SourceCodeCache(Script::Type type): type_(type), cache_(NULL) { }
 
-  void Initialize(bool create_heap_objects) {
-    cache_ = create_heap_objects ?
-        Isolate::Current()->heap()->empty_fixed_array() : NULL;
+  void Initialize(Isolate* isolate, bool create_heap_objects) {
+    cache_ = create_heap_objects ? isolate->heap()->empty_fixed_array() : NULL;
   }
 
   void Iterate(ObjectVisitor* v) {
     v->VisitPointer(BitCast<Object**, FixedArray**>(&cache_));
   }
 
   bool Lookup(Vector<const char> name, Handle<SharedFunctionInfo>* handle) {
     for (int i = 0; i < cache_->length(); i+=2) {
       SeqOneByteString* str = SeqOneByteString::cast(cache_->get(i));
       if (str->IsUtf8EqualTo(name)) {
@@ skipping 127 matching lines @@
     return length_;
   }
  private:
   const char* data_;
   size_t length_;
 };
 
 }}  // namespace v8::internal
 
 #endif  // V8_BOOTSTRAPPER_H_