[wasm] Implement stepping in wasm code

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index 62470e3a03028657711af43a253ac22041822d34..97b8f1b3919a7d9f36d4c0b2d27c4a9a1003449b 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -1462,8 +1462,6 @@ class JavaScriptFrameIterator BASE_EMBEDDED {
  public:
   inline explicit JavaScriptFrameIterator(Isolate* isolate);
   inline JavaScriptFrameIterator(Isolate* isolate, ThreadLocalTop* top);
-  // Skip frames until the frame with the given id is reached.
-  JavaScriptFrameIterator(Isolate* isolate, StackFrame::Id id);
 
   inline JavaScriptFrame* frame() const;
 
@@ -1485,6 +1483,7 @@ class JavaScriptFrameIterator BASE_EMBEDDED {
 class StackTraceFrameIterator BASE_EMBEDDED {
  public:
   explicit StackTraceFrameIterator(Isolate* isolate);
+  // Skip frames until the frame with the given id is reached.
   StackTraceFrameIterator(Isolate* isolate, StackFrame::Id id);
   bool done() const { return iterator_.done(); }
   void Advance();