First version of the new generators implementation.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 63f670facd02f2338db63406cd6f4aa5e5edeb73..559f0a0292b689d78e05ce8ef0bf3a78633db533 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -1162,7 +1162,7 @@ Object* Isolate::UnwindAndFindHandler() {
         // position of the exception handler. The special builtin below will
         // take care of continuing to dispatch at that position. Also restore
         // the correct context for the handler from the interpreter register.
-        context = Context::cast(js_frame->GetInterpreterRegister(context_reg));
+        context = Context::cast(js_frame->ReadInterpreterRegister(context_reg));
         js_frame->PatchBytecodeOffset(static_cast<int>(offset));
         offset = 0;