Update from https://crrev.com/303153

gin/object_template_builder.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GIN_OBJECT_TEMPLATE_BUILDER_H_
 #define GIN_OBJECT_TEMPLATE_BUILDER_H_
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/strings/string_piece.h"
@@ skipping 53 matching lines @@
                                    v8::Local<v8::ObjectTemplate> tmpl,
                                    T callback) {
     CreateFunctionHandler(
         isolate, tmpl, base::Bind(callback), HolderIsFirstArgument);
   }
 };
 
 // This specialization allows people to construct function templates directly if
 // they need to do fancier stuff.
 template<>
-struct GIN_EXPORT CallbackTraits<v8::Handle<v8::FunctionTemplate> > {
+struct CallbackTraits<v8::Handle<v8::FunctionTemplate> > {
   static v8::Handle<v8::FunctionTemplate> CreateTemplate(
       v8::Handle<v8::FunctionTemplate> templ) {
     return templ;
   }
 };
 
 }  // namespace
 
 
 // ObjectTemplateBuilder provides a handy interface to creating
@@ skipping 53 matching lines @@
 
   v8::Isolate* isolate_;
 
   // ObjectTemplateBuilder should only be used on the stack.
   v8::Local<v8::ObjectTemplate> template_;
 };
 
 }  // namespace gin
 
 #endif  // GIN_OBJECT_TEMPLATE_BUILDER_H_