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

src/arm64/stub-cache-arm64.cc

Index: src/arm64/stub-cache-arm64.cc
diff --git a/src/arm64/stub-cache-arm64.cc b/src/arm64/stub-cache-arm64.cc
index 9a6ef892c7d221cc961050d193194d505b90b095..f6efccd31dcec9760ed06cf22c0a9e487339edad 100644
--- a/src/arm64/stub-cache-arm64.cc
+++ b/src/arm64/stub-cache-arm64.cc
@@ -998,13 +998,13 @@ void LoadStubCompiler::GenerateLoadField(Register reg,
                        field.is_inobject(holder),
                        field.translate(holder),
                        representation);
-    GenerateTailCall(masm(), stub.GetCode(isolate()));
+    GenerateTailCall(masm(), stub.GetCode());
   } else {
     KeyedLoadFieldStub stub(isolate(),
                             field.is_inobject(holder),
                             field.translate(holder),
                             representation);
-    GenerateTailCall(masm(), stub.GetCode(isolate()));
+    GenerateTailCall(masm(), stub.GetCode());
   }
 }