corrected parts in d8 that accesses the new "deisolated" Thread in platform.h

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index 022860ead8dcc68e03d6bd54d4d1907372c237e2..5a5238011aea88af32d8506d90d1fb3060bd1174 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -771,8 +771,8 @@ void Shell::RunShell() {
 
 class ShellThread : public i::Thread {
  public:
-  ShellThread(i::Isolate* isolate, int no, i::Vector<const char> files)
-    : Thread(isolate, "d8:ShellThread"),
+  ShellThread(int no, i::Vector<const char> files)
+    : Thread("d8:ShellThread"),
       no_(no), files_(files) { }
   virtual void Run();
  private:
@@ -879,8 +879,7 @@ int Shell::RunMain(int argc, char* argv[]) {
         const char* files = ReadChars(argv[++i], &size);
         if (files == NULL) return 1;
         ShellThread* thread =
-            new ShellThread(i::Isolate::Current(),
-                            threads.length(),
+            new ShellThread(threads.length(),
                             i::Vector<const char>(files, size));
         thread->Start();
         threads.Add(thread);