[wasm] prototype for breakpoint support.

src/debug/debug-frames.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_DEBUG_DEBUG_FRAMES_H_
 #define V8_DEBUG_DEBUG_FRAMES_H_
 
 #include "src/deoptimizer.h"
 #include "src/frames.h"
 #include "src/isolate.h"
 #include "src/objects.h"
 
 namespace v8 {
 namespace internal {
 
 class FrameInspector {
  public:
-  FrameInspector(StandardFrame* frame, int inlined_jsframe_index,
+  FrameInspector(StandardFrame* frame, int inlined_frame_index,
                  Isolate* isolate);
 
-  ~FrameInspector();
-
   int GetParametersCount();
+  bool HasFunction();
   Handle<JSFunction> GetFunction();
+  Handle<String> GetFunctionName();
   Handle<Script> GetScript();
   Handle<Object> GetParameter(int index);
   Handle<Object> GetExpression(int index);
   int GetSourcePosition();
   bool IsConstructor();
   Handle<Object> GetContext();
 
   inline JavaScriptFrame* javascript_frame() {
     return frame_->is_arguments_adaptor() ? ArgumentsAdaptorFrame::cast(frame_)
                                           : JavaScriptFrame::cast(frame_);
@@ skipping 10 matching lines @@
                               Handle<JSFunction> function);
 
   void UpdateStackLocalsFromMaterializedObject(Handle<JSObject> object,
                                                Handle<ScopeInfo> scope_info);
 
  private:
   bool ParameterIsShadowedByContextLocal(Handle<ScopeInfo> info,
                                          Handle<String> parameter_name);
 
   StandardFrame* frame_;
-  DeoptimizedFrameInfo* deoptimized_frame_;
+  std::unique_ptr<DeoptimizedFrameInfo> deoptimized_frame_;
+  std::unique_ptr<wasm::InterpreterFrameInfo> wasm_interpreted_frame_;
   Isolate* isolate_;
-  bool is_optimized_;
   bool is_interpreted_;
   bool is_bottommost_;
   bool has_adapted_arguments_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameInspector);
 };
 
 
 class DebugFrameHelper : public AllStatic {
  public:
@@ skipping 11 matching lines @@
 
   static StackFrame::Id UnwrapFrameId(int wrapped) {
     return static_cast<StackFrame::Id>(wrapped << 2);
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_DEBUG_DEBUG_FRAMES_H_