bulk replace v8::Isolate::GetCurrent in tests

test/cctest/test-random.cc

Index: test/cctest/test-random.cc
diff --git a/test/cctest/test-random.cc b/test/cctest/test-random.cc
index 4227326a92cb275275ce076f558fa2af9f1068c6..44b7b9f86fa36d895aba17d5aa45363e6194e778 100644
--- a/test/cctest/test-random.cc
+++ b/test/cctest/test-random.cc
@@ -70,7 +70,7 @@ TEST(CrankshaftRandom) {
   v8::V8::Initialize();
   // Skip test if crankshaft is disabled.
   if (!Isolate::Current()->use_crankshaft()) return;
-  v8::Isolate* v8_isolate = v8::Isolate::GetCurrent();
+  v8::Isolate* v8_isolate = CcTest::isolate();
   v8::HandleScope scope(v8_isolate);
   v8::Context::Scope context_scope(v8::Context::New(v8_isolate));