Upgrade V8 to version 4.9.385.28

https://chromium.googlesource.com/v8/v8/+/4.9.385.28

FPIIM-449

Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/x64/codegen-x64.h b/src/x64/codegen-x64.h
index 0a551ee..1403781 100644
--- a/src/x64/codegen-x64.h
+++ b/src/x64/codegen-x64.h
@@ -5,16 +5,13 @@
 #ifndef V8_X64_CODEGEN_X64_H_
 #define V8_X64_CODEGEN_X64_H_
 
-#include "src/ast.h"
+#include "src/ast/ast.h"
 #include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 
-enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };
-
-
 class StringCharLoadGenerator : public AllStatic {
  public:
   // Generates the code for handling different string types and loading the
@@ -111,6 +108,7 @@
 };
 
 
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_X64_CODEGEN_X64_H_