Implement LinkError; import tweaks

src/wasm/wasm-js.cc

 // 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.
 
 #include "src/api-natives.h"
 #include "src/api.h"
 #include "src/asmjs/asm-js.h"
 #include "src/asmjs/asm-typer.h"
 #include "src/asmjs/asm-wasm-builder.h"
 #include "src/assert-scope.h"
@@ skipping 681 matching lines @@
                         memory_constructor, DONT_ENUM);
   InstallFunc(isolate, memory_proto, "grow", WebAssemblyMemoryGrow);
   InstallGetter(isolate, memory_proto, "buffer", WebAssemblyMemoryGetBuffer);
 
   // Setup errors
   attributes = static_cast<PropertyAttributes>(DONT_DELETE | READ_ONLY);
   Handle<JSFunction> compile_error(
       isolate->native_context()->wasm_compile_error_function());
   JSObject::AddProperty(webassembly, isolate->factory()->CompileError_string(),
                         compile_error, attributes);
+  Handle<JSFunction> link_error(
+      isolate->native_context()->wasm_link_error_function());
+  JSObject::AddProperty(webassembly, isolate->factory()->LinkError_string(),
+                        link_error, attributes);
   Handle<JSFunction> runtime_error(
       isolate->native_context()->wasm_runtime_error_function());
   JSObject::AddProperty(webassembly, isolate->factory()->RuntimeError_string(),
                         runtime_error, attributes);
 }
 
 void WasmJs::Install(Isolate* isolate, Handle<JSGlobalObject> global) {
   if (!FLAG_expose_wasm && !FLAG_validate_asm) {
     return;
   }
@@ skipping 50 matching lines @@
   i::Handle<i::Symbol> symbol(isolate->context()->wasm_memory_sym(), isolate);
   return HasBrand(value, symbol);
 }
 
 bool WasmJs::IsWasmTableObject(Isolate* isolate, Handle<Object> value) {
   i::Handle<i::Symbol> symbol(isolate->context()->wasm_table_sym(), isolate);
   return HasBrand(value, symbol);
 }
 }  // namespace internal
 }  // namespace v8