[wasm] Enable wasm frame inspection for debugging

src/wasm/wasm-debug.h

Index: src/wasm/wasm-debug.h
diff --git a/src/wasm/wasm-debug.h b/src/wasm/wasm-debug.h
index 48dc4be6ec5e2dd800b9d91f144a45420f6bd839..965995127122cbbc599a7089f4b6d4a10e5db478 100644
--- a/src/wasm/wasm-debug.h
+++ b/src/wasm/wasm-debug.h
@@ -23,11 +23,16 @@ class WasmDebugInfo : public FixedArray {
 
   bool SetBreakPoint(int byte_offset);
 
+  // Get the Script for the specified function.
+  static Script* GetFunctionScript(Handle<WasmDebugInfo> debug_info,
+                                   int func_index);
+
   // Disassemble the specified function from this module.
   static Handle<String> DisassembleFunction(Handle<WasmDebugInfo> debug_info,
                                             int func_index);
 
-  // Get the offset table for the specified function.
+  // Get the offset table for the specified function, mapping from byte offsets
+  // to position in the disassembly.
   // Returns an array with three entries per instruction: byte offset, line and
   // column.
   static Handle<FixedArray> GetFunctionOffsetTable(