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/base/atomicops_internals_x86_gcc.h b/src/base/atomicops_internals_x86_gcc.h
index ec87c42..55bc44c 100644
--- a/src/base/atomicops_internals_x86_gcc.h
+++ b/src/base/atomicops_internals_x86_gcc.h
@@ -267,7 +267,8 @@
 
 #endif  // defined(__x86_64__)
 
-} }  // namespace v8::base
+}  // namespace base
+}  // namespace v8
 
 #undef ATOMICOPS_COMPILER_BARRIER