[generators] Decouple generator resume from fullcodegen.

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index fbfdd5f644c1b921973b7472b28c66e3393d8f2d..77da009a3fe9b4da04d5a528be8bfa4ecd25432b 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -371,6 +371,12 @@ Callable CodeFactory::StoreInterceptor(Isolate* isolate) {
 }
 
 // static
+Callable CodeFactory::ResumeGenerator(Isolate* isolate) {
+  return Callable(isolate->builtins()->ResumeGeneratorTrampoline(),
+                  ResumeGeneratorDescriptor(isolate));
+}
+
+// static
 Callable CodeFactory::Typeof(Isolate* isolate) {
   TypeofStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());