[wasm] Remove two obsolete functions

src/runtime/runtime-debug.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/debug/debug-evaluate.h"
 #include "src/debug/debug-frames.h"
 #include "src/debug/debug-scopes.h"
@@ skipping 533 matching lines @@
 
   if (it.is_wasm()) {
     // Create the details array (no dynamic information for wasm).
     Handle<FixedArray> details =
         isolate->factory()->NewFixedArray(kFrameDetailsFirstDynamicIndex);
 
     // Add the frame id.
     details->set(kFrameDetailsFrameIdIndex, *frame_id);
 
     // Add the function name.
-    Handle<Object> wasm_instance(it.wasm_frame()->wasm_instance(), isolate);
+    Handle<Object> wasm_instance_or_undef(it.wasm_frame()->wasm_instance(),
+                                          isolate);
     int func_index = it.wasm_frame()->function_index();
     Handle<String> func_name =
-        wasm::GetWasmFunctionName(isolate, wasm_instance, func_index);
+        wasm::GetWasmFunctionName(isolate, wasm_instance_or_undef, func_index);
     details->set(kFrameDetailsFunctionIndex, *func_name);
 
     // Add the script wrapper
     Handle<Object> script_wrapper =
         Script::GetWrapper(frame_inspector.GetScript());
     details->set(kFrameDetailsScriptIndex, *script_wrapper);
 
     // Add the arguments count.
     details->set(kFrameDetailsArgumentCountIndex, Smi::kZero);
 
     // Add the locals count
     details->set(kFrameDetailsLocalCountIndex, Smi::kZero);
 
     // Add the source position.
     // For wasm, it is function-local, so translate it to a module-relative
     // position, such that together with the script it uniquely identifies the
     // position.
     Handle<Object> positionValue;
-    if (position != kNoSourcePosition) {
+    if (position != kNoSourcePosition &&
+        !wasm_instance_or_undef->IsUndefined(isolate)) {
       int translated_position = position;
-      if (!wasm::WasmIsAsmJs(*wasm_instance, isolate)) {
+      if (!wasm::WasmIsAsmJs(*wasm_instance_or_undef, isolate)) {
         Handle<WasmCompiledModule> compiled_module(
-            wasm::GetCompiledModule(JSObject::cast(*wasm_instance)), isolate);
+            WasmInstanceObject::cast(*wasm_instance_or_undef)
+                ->get_compiled_module(),
+            isolate);
         translated_position +=
             wasm::GetFunctionCodeOffset(compiled_module, func_index);
       }
       details->set(kFrameDetailsSourcePositionIndex,
                    Smi::FromInt(translated_position));
     }
 
     // Add the constructor information.
     details->set(kFrameDetailsConstructCallIndex, heap->ToBoolean(false));
 
@@ skipping 1313 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_DebugBreakInOptimizedCode) {
   UNIMPLEMENTED();
   return NULL;
 }
 
 }  // namespace internal
 }  // namespace v8