PropertyAccessCompiler should always emit reloc info for external references.

src/ic/access-compiler.h

Index: src/ic/access-compiler.h
diff --git a/src/ic/access-compiler.h b/src/ic/access-compiler.h
index 928b70b7499278e14b4ba4e7aa696faddb358cd2..dd1baade349d7ca5d512de8dee88721620852d36 100644
--- a/src/ic/access-compiler.h
+++ b/src/ic/access-compiler.h
@@ -40,7 +40,10 @@ class PropertyAccessCompiler BASE_EMBEDDED {
         kind_(kind),
         cache_holder_(cache_holder),
         isolate_(isolate),
-        masm_(isolate, NULL, 256) {}
+        masm_(isolate, NULL, 256) {
+    // TODO(yangguo): remove this once we can serialize IC stubs.
+    masm_.enable_serializer();
+  }
 
   Code::Kind kind() const { return kind_; }
   CacheHolderFlag cache_holder() const { return cache_holder_; }