Move OS::MemCopy and OS::MemMove out of platform to utils

src/x64/assembler-x64.cc

 // 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.
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "macro-assembler.h"
 #include "serialize.h"
@@ skipping 343 matching lines @@
   // Clear the buffer in debug mode. Use 'int3' instructions to make
   // sure to get into problems if we ever run uninitialized code.
 #ifdef DEBUG
   memset(desc.buffer, 0xCC, desc.buffer_size);
 #endif
 
   // Copy the data.
   intptr_t pc_delta = desc.buffer - buffer_;
   intptr_t rc_delta = (desc.buffer + desc.buffer_size) -
       (buffer_ + buffer_size_);
-  OS::MemMove(desc.buffer, buffer_, desc.instr_size);
-  OS::MemMove(rc_delta + reloc_info_writer.pos(),
-              reloc_info_writer.pos(), desc.reloc_size);
+  MemMove(desc.buffer, buffer_, desc.instr_size);
+  MemMove(rc_delta + reloc_info_writer.pos(), reloc_info_writer.pos(),
+          desc.reloc_size);
 
   // Switch buffers.
   if (isolate() != NULL &&
       isolate()->assembler_spare_buffer() == NULL &&
       buffer_size_ == kMinimalBufferSize) {
     isolate()->set_assembler_spare_buffer(buffer_);
   } else {
     DeleteArray(buffer_);
   }
   buffer_ = desc.buffer;
@@ skipping 2583 matching lines @@
 
 
 bool RelocInfo::IsInConstantPool() {
   return false;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64