[wasm] Implement WebAssembly.validate()

src/wasm/wasm-module.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_WASM_MODULE_H_
 #define V8_WASM_MODULE_H_
 
 #include <memory>
 
 #include "src/api.h"
@@ skipping 380 matching lines @@
                            const std::vector<Handle<Code>>* code_table);
 
 Handle<JSObject> CreateCompiledModuleObject(Isolate* isolate,
                                             Handle<FixedArray> compiled_module,
                                             ModuleOrigin origin);
 
 V8_EXPORT_PRIVATE MaybeHandle<JSObject> CreateModuleObjectFromBytes(
     Isolate* isolate, const byte* start, const byte* end, ErrorThrower* thrower,
     ModuleOrigin origin);
 
+V8_EXPORT_PRIVATE bool ValidateModuleBytes(Isolate* isolate, const byte* start,
+                                           const byte* end,
+                                           ErrorThrower* thrower,
+                                           ModuleOrigin origin);
+
 // Get the number of imported functions for a WASM instance.
 uint32_t GetNumImportedFunctions(Handle<JSObject> wasm_object);
 
 // Assumed to be called with a code object associated to a wasm module instance.
 // Intended to be called from runtime functions.
 // Returns undefined if the runtime support was not setup, nullptr if the
 // instance
 // was collected, or the instance object owning the Code object
 Object* GetOwningWasmInstance(Object* undefined, Code* code);
 
 MaybeHandle<JSArrayBuffer> GetInstanceMemory(Isolate* isolate,
                                              Handle<JSObject> instance);
 void SetInstanceMemory(Handle<JSObject> instance, JSArrayBuffer* buffer);
 
 namespace testing {
 
 void ValidateInstancesChain(Isolate* isolate, Handle<JSObject> module_obj,
                             int instance_count);
 void ValidateModuleState(Isolate* isolate, Handle<JSObject> module_obj);
 void ValidateOrphanedInstance(Isolate* isolate, Handle<JSObject> instance);
 
 }  // namespace testing
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_MODULE_H_