[wasm] prototype for breakpoint support.

src/frames-inl.h

Index: src/frames-inl.h
diff --git a/src/frames-inl.h b/src/frames-inl.h
index 1ac9800f5a4ed26e2434bf757d1344cc276f6a85..4cd8dd6851989df541a86e1beebfab7670c08fce 100644
--- a/src/frames-inl.h
+++ b/src/frames-inl.h
@@ -224,6 +224,13 @@ inline BuiltinFrame::BuiltinFrame(StackFrameIteratorBase* iterator)
 inline WasmFrame::WasmFrame(StackFrameIteratorBase* iterator)
     : StandardFrame(iterator) {}
 
+inline WasmCompiledFrame::WasmCompiledFrame(StackFrameIteratorBase* iterator)
+    : WasmFrame(iterator) {}
+
+inline WasmInterpretedFrame::WasmInterpretedFrame(
+    StackFrameIteratorBase* iterator)
+    : WasmFrame(iterator) {}
+
 inline WasmToJsFrame::WasmToJsFrame(StackFrameIteratorBase* iterator)
     : StubFrame(iterator) {}
 
@@ -269,7 +276,7 @@ inline JavaScriptFrame* JavaScriptFrameIterator::frame() const {
 inline StandardFrame* StackTraceFrameIterator::frame() const {
   StackFrame* frame = iterator_.frame();
   DCHECK(frame->is_java_script() || frame->is_arguments_adaptor() ||
-         frame->is_wasm());
+         frame->is_wasm_compiled() || frame->is_wasm_interpreted());
   return static_cast<StandardFrame*>(frame);
 }
 
@@ -295,6 +302,29 @@ inline StackFrame* SafeStackFrameIterator::frame() const {
   return frame_;
 }
 
+inline Handle<Object> FrameSummary::receiver() {
+  DCHECK(is_javascript());
+  return receiver_;
+}
+
+Handle<Object> FrameSummary::wasm_object() {
+  DCHECK(is_wasm());
+  return receiver_;
+}
+
+Handle<JSFunction> FrameSummary::function() {
+  DCHECK(is_javascript());
+  return Handle<JSFunction>::cast(function_);
+}
+
+int FrameSummary::wasm_function_index() {
+  DCHECK(is_wasm());
+  return Smi::cast(*function_)->value();
+}
+
+bool FrameSummary::is_subject_to_debugging() {
+  return is_wasm() || function()->shared()->IsSubjectToDebugging();
+}
 
 }  // namespace internal
 }  // namespace v8