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/x87/frames-x87.cc b/src/x87/frames-x87.cc
index 6091b45..80e30a5 100644
--- a/src/x87/frames-x87.cc
+++ b/src/x87/frames-x87.cc
@@ -2,14 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "src/v8.h"
-
 #if V8_TARGET_ARCH_X87
 
 #include "src/assembler.h"
 #include "src/frames.h"
 #include "src/x87/assembler-x87-inl.h"
 #include "src/x87/assembler-x87.h"
+#include "src/x87/frames-x87.h"
 
 namespace v8 {
 namespace internal {
@@ -31,12 +30,7 @@
 }
 
 
-Object*& ExitFrame::constant_pool_slot() const {
-  UNREACHABLE();
-  return Memory::Object_at(NULL);
-}
-
-
-} }  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87