Export more symbols needed for the component build of content.

content/app/content_main_delegate.h

 // Copyright (c) 2011 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 CONTENT_APP_CONTENT_MAIN_DELEGATE_H_
 #define CONTENT_APP_CONTENT_MAIN_DELEGATE_H_
 #pragma once
 
 #include <string>
 
 #include "build/build_config.h"
+#include "content/common/content_export.h"
 
 struct MainFunctionParams;
 class ZygoteForkDelegate;
 
 namespace content {
 
-class ContentMainDelegate {
+class CONTENT_EXPORT ContentMainDelegate {
  public:
   virtual ~ContentMainDelegate();
 
   // Tells the embedder that the absolute basic startup has been done, i.e. it's
   // now safe to create singletons and check the command line. Return true if
   // the process should exit afterwards, and if so, |exit_code| should be set.
   // This is the place for embedder to do the things that must happen at the
   // start. Most of its startup code should be in the methods below.
   virtual bool BasicStartupComplete(int* exit_code);
 
@@ skipping 35 matching lines @@
   virtual ZygoteForkDelegate* ZygoteStarting();
 
   // Called every time the zygote process forks.
   virtual void ZygoteForked();
 #endif  // OS_MACOSX
 };
 
 }  // namespace content
 
 #endif  // CONTENT_APP_CONTENT_MAIN_DELEGATE_H_