Add exports needed for glue to build as a component.

webkit/glue/webthread_impl.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 WEBKIT_GLUE_WEBTHREAD_IMPL_H_
 #define WEBKIT_GLUE_WEBTHREAD_IMPL_H_
 
 #include "base/threading/thread.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebThread.h"
+#include "webkit/glue/webkit_glue_export.h"
 
 namespace webkit_glue {
 
 class WebThreadImpl : public WebKit::WebThread {
  public:
-  WebThreadImpl(const char* name);
-  virtual ~WebThreadImpl();
+  WEBKIT_GLUE_EXPORT WebThreadImpl(const char* name);
+  WEBKIT_GLUE_EXPORT virtual ~WebThreadImpl();
 
   virtual void postTask(Task* task) OVERRIDE;
   virtual void postDelayedTask(Task* task, long long delay_ms) OVERRIDE;
 
   MessageLoop* message_loop() const { return thread_->message_loop(); }
 
  protected:
   scoped_ptr<base::Thread> thread_;
 };
 
 class WebThreadImplForMessageLoop : public WebKit::WebThread {
  public:
   WebThreadImplForMessageLoop(base::MessageLoopProxy* message_loop);
   virtual ~WebThreadImplForMessageLoop();
 
   virtual void postTask(Task* task) OVERRIDE;
   virtual void postDelayedTask(Task* task, long long delay_ms) OVERRIDE;
 
  protected:
   scoped_refptr<base::MessageLoopProxy> message_loop_;
 };
 
 } // namespace webkit_glue
 
 #endif