Revert 21502 - "Move OS::MemCopy and OS::MemMove out of platform to utils"

src/mips/codegen-mips.cc

Index: src/mips/codegen-mips.cc
diff --git a/src/mips/codegen-mips.cc b/src/mips/codegen-mips.cc
index d7e0a5110d2ab603a5b9e7097a0eb614a2f17e4c..adf6d37d895e42c0cd3968c4595db43759dfc06e 100644
--- a/src/mips/codegen-mips.cc
+++ b/src/mips/codegen-mips.cc
@@ -71,7 +71,8 @@ UnaryMathFunction CreateExpFunction() {
 
 
 #if defined(V8_HOST_ARCH_MIPS)
-MemCopyUint8Function CreateMemCopyUint8Function(MemCopyUint8Function stub) {
+OS::MemCopyUint8Function CreateMemCopyUint8Function(
+    OS::MemCopyUint8Function stub) {
 #if defined(USE_SIMULATOR)
   return stub;
 #else
@@ -596,7 +597,7 @@ MemCopyUint8Function CreateMemCopyUint8Function(MemCopyUint8Function stub) {
 
   CPU::FlushICache(buffer, actual_size);
   OS::ProtectCode(buffer, actual_size);
-  return FUNCTION_CAST<MemCopyUint8Function>(buffer);
+  return FUNCTION_CAST<OS::MemCopyUint8Function>(buffer);
 #endif
 }
 #endif