CodeStubs contain their corresponding Isolate* now. (part 2)

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index a1070fab4b1038974aea5582d78537a70fae1d35..bb482b80eeda6515155aba8610630d239490fd09 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2780,13 +2780,13 @@ bool Heap::CreateApiObjects() {
 
 void Heap::CreateJSEntryStub() {
   JSEntryStub stub(isolate());
-  set_js_entry_code(*stub.GetCode(isolate()));
+  set_js_entry_code(*stub.GetCode());
 }
 
 
 void Heap::CreateJSConstructEntryStub() {
   JSConstructEntryStub stub(isolate());
-  set_js_construct_entry_code(*stub.GetCode(isolate()));
+  set_js_construct_entry_code(*stub.GetCode());
 }