[Interpreter]: Basic support for iterating interpreter stack frames for GC.

src/frames-inl.h

Index: src/frames-inl.h
diff --git a/src/frames-inl.h b/src/frames-inl.h
index 2a02f9089b9e634d11e360eaac65f5d45894d9b1..4013601dace9c121bf722b131e6a71234dba2df5 100644
--- a/src/frames-inl.h
+++ b/src/frames-inl.h
@@ -234,6 +234,10 @@ inline OptimizedFrame::OptimizedFrame(StackFrameIteratorBase* iterator)
 }
 
 
+inline InterpretedFrame::InterpretedFrame(StackFrameIteratorBase* iterator)
+    : JavaScriptFrame(iterator) {}
+
+
 inline ArgumentsAdaptorFrame::ArgumentsAdaptorFrame(
     StackFrameIteratorBase* iterator) : JavaScriptFrame(iterator) {
 }