[wasm] Enable wasm frame inspection for debugging

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index 213e8f74fc92d3e56bddbe0a679e02030e28090c..2d4a70c83b67ee3c4da3c5a6b88c063252b7ded6 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -671,9 +671,6 @@ class StandardFrame : public StackFrame {
   // Testers.
   bool is_standard() const override { return true; }
 
-  // Accessors.
-  inline Object* context() const;
-
   // Access the expressions in the stack frame including locals.
   inline Object* GetExpression(int index) const;
   inline void SetExpression(int index, Object* value);
@@ -738,6 +735,7 @@ class JavaScriptFrame : public StandardFrame {
   // Accessors.
   virtual JSFunction* function() const;
   virtual Object* receiver() const;
+  inline Object* context() const;
 
   inline void set_receiver(Object* value);
 
@@ -970,8 +968,9 @@ class WasmFrame : public StandardFrame {
   // Determine the code for the frame.
   Code* unchecked_code() const override;
 
-  Object* wasm_obj();
-  uint32_t function_index();
+  // Accessors.
+  Object* wasm_obj() const;
+  uint32_t function_index() const;
 
   static WasmFrame* cast(StackFrame* frame) {
     DCHECK(frame->is_wasm());
@@ -1161,6 +1160,7 @@ class JavaScriptFrameIterator BASE_EMBEDDED {
 class StackTraceFrameIterator BASE_EMBEDDED {
  public:
   explicit StackTraceFrameIterator(Isolate* isolate);
+  StackTraceFrameIterator(Isolate* isolate, StackFrame::Id id);
   bool done() const { return iterator_.done(); }
   void Advance();
 
@@ -1171,6 +1171,11 @@ class StackTraceFrameIterator BASE_EMBEDDED {
   inline JavaScriptFrame* javascript_frame() const;
   inline WasmFrame* wasm_frame() const;
 
+  // Advance to the frame holding the arguments for the current
+  // frame. This only affects the current frame if it is a javascript frame and
+  // has adapted arguments.
+  void AdvanceToArgumentsFrame();
+
  private:
   StackFrameIterator iterator_;
   bool IsValidFrame(StackFrame* frame) const;