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/cached-powers.h b/src/cached-powers.h
index bfe3635..fade5c9 100644
--- a/src/cached-powers.h
+++ b/src/cached-powers.h
@@ -37,6 +37,7 @@
                                                int* found_exponent);
 };
 
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_CACHED_POWERS_H_