Unify the way cctest initalizes the VM for each test case.

test/cctest/test-symbols.cc

Index: test/cctest/test-symbols.cc
diff --git a/test/cctest/test-symbols.cc b/test/cctest/test-symbols.cc
index e9534574255dc00517c7764b11bb6aca4b87f5f8..6a8323bea4ace612ebd453d0569f942677b065cd 100644
--- a/test/cctest/test-symbols.cc
+++ b/test/cctest/test-symbols.cc
@@ -12,20 +12,9 @@
 
 using namespace v8::internal;
 
-static v8::Persistent<v8::Context> env;
-
-static void InitializeVM() {
-  if (env.IsEmpty()) {
-    const char* extensions[] = { "v8/print" };
-    v8::ExtensionConfiguration config(1, extensions);
-    env = v8::Context::New(&config);
-  }
-  env->Enter();
-}
-
 
 TEST(Create) {
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);