Update V8 to r5425 as required by WebKit r67178

Change-Id: Ic338e7242d33e5a024bd5978f4a5a3a681af4ebd
diff --git a/src/code-stubs.h b/src/code-stubs.h
index c2dd0a7..98a5cf6 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -110,10 +110,10 @@
 
   static Major MajorKeyFromKey(uint32_t key) {
     return static_cast<Major>(MajorKeyBits::decode(key));
-  };
+  }
   static int MinorKeyFromKey(uint32_t key) {
     return MinorKeyBits::decode(key);
-  };
+  }
 
   // Gets the major key from a code object that is a code stub or binary op IC.
   static Major GetMajorKey(Code* code_stub) {