Revert of Remove SIMD.js from V8.

src/code-factory.h

 // Copyright 2012 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_CODE_FACTORY_H_
 #define V8_CODE_FACTORY_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/codegen.h"
@@ skipping 145 matching lines @@
   static Callable ForInNext(Isolate* isolate);
 
   static Callable CopyFastSmiOrObjectElements(Isolate* isolate);
   static Callable GrowFastDoubleElements(Isolate* isolate);
   static Callable GrowFastSmiOrObjectElements(Isolate* isolate);
 
   static Callable NewUnmappedArgumentsElements(Isolate* isolate);
   static Callable NewRestParameterElements(Isolate* isolate);
 
   static Callable AllocateHeapNumber(Isolate* isolate);
+#define SIMD128_ALLOC(TYPE, Type, type, lane_count, lane_type) \
+  static Callable Allocate##Type(Isolate* isolate);
+  SIMD128_TYPES(SIMD128_ALLOC)
+#undef SIMD128_ALLOC
 
   static Callable ArgumentAdaptor(Isolate* isolate);
   static Callable Call(Isolate* isolate,
                        ConvertReceiverMode mode = ConvertReceiverMode::kAny,
                        TailCallMode tail_call_mode = TailCallMode::kDisallow);
   static Callable CallWithSpread(Isolate* isolate);
   static Callable CallFunction(
       Isolate* isolate, ConvertReceiverMode mode = ConvertReceiverMode::kAny,
       TailCallMode tail_call_mode = TailCallMode::kDisallow);
   static Callable CallForwardVarargs(Isolate* isolate);
@@ skipping 17 matching lines @@
   static Callable ArrayConstructor(Isolate* isolate);
   static Callable ArrayPush(Isolate* isolate);
   static Callable FunctionPrototypeBind(Isolate* isolate);
   static Callable PromiseHandleReject(Isolate* isolate);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_FACTORY_H_