[wasm] Provide better stack traces for asm.js code

src/objects.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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 2955 matching lines @@
 // Container object for data collected during simple stack trace captures.
 class FrameArray : public FixedArray {
  public:
 #define DECLARE_FRAME_ARRAY_ACCESSORS(name, type) \
   inline type* name(int frame_ix) const;          \
   inline void Set##name(int frame_ix, type* value);
   FRAME_ARRAY_FIELD_LIST(DECLARE_FRAME_ARRAY_ACCESSORS)
 #undef DECLARE_FRAME_ARRAY_ACCESSORS
 
   inline bool IsWasmFrame(int frame_ix) const;
+  inline bool IsAsmJsWasmFrame(int frame_ix) const;
   inline int FrameCount() const;
 
   void ShrinkToFit();
 
   // Flags.
   static const int kIsWasmFrame = 1 << 0;
-  static const int kIsStrict = 1 << 1;
-  static const int kForceConstructor = 1 << 2;
+  static const int kIsAsmJsWasmFrame = 1 << 1;
+  static const int kIsStrict = 1 << 2;
+  static const int kForceConstructor = 1 << 3;
 
   static Handle<FrameArray> AppendJSFrame(Handle<FrameArray> in,
                                           Handle<Object> receiver,
                                           Handle<JSFunction> function,
                                           Handle<AbstractCode> code, int offset,
                                           int flags);
   static Handle<FrameArray> AppendWasmFrame(Handle<FrameArray> in,
                                             Handle<Object> wasm_object,
                                             int wasm_function_index,
                                             Handle<AbstractCode> code,
@@ skipping 8451 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_