prune down content_dll change to just the CONTENT_EXPORTS

content/browser/browser_thread.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_BROWSER_BROWSER_THREAD_H_
 #define CONTENT_BROWSER_BROWSER_THREAD_H_
 #pragma once
 
 #include "base/callback.h"
 #include "base/synchronization/lock.h"
 #include "base/task.h"
 #include "base/threading/thread.h"
+#include "content/common/content_export.h"
 
 #if defined(UNIT_TEST)
 #include "base/logging.h"
 #endif  // UNIT_TEST
 
 namespace base {
 class MessageLoopProxy;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserThread
 //
 // This class represents a thread that is known by a browser-wide name.  For
 // example, there is one IO thread for the entire browser process, and various
 // pieces of code find it useful to retrieve a pointer to the IO thread's
 // Invoke a task by thread ID:
 //
 //   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE, task);
 //
 // The return value is false if the task couldn't be posted because the target
 // thread doesn't exist.  If this could lead to data loss, you need to check the
 // result and restructure the code to ensure it doesn't occur.
 //
 // This class automatically handles the lifetime of different threads.
 // It's always safe to call PostTask on any thread.  If it's not yet created,
 // the task is deleted.  There are no race conditions.  If the thread that the
 // task is posted to is guaranteed to outlive the current thread, then no locks
 // are used.  You should never need to cache pointers to MessageLoops, since
 // they're not thread safe.
-class BrowserThread : public base::Thread {
+class CONTENT_EXPORT BrowserThread : public base::Thread {
  public:
   // An enumeration of the well-known threads.
   // NOTE: threads must be listed in the order of their life-time, with each
   // thread outliving every other thread below it.
   enum ID {
     // The main thread in the browser.
     UI,
 
     // This is the thread that interacts with the database.
     DB,
@@ skipping 188 matching lines @@
   static base::Lock lock_;
 
   // An array of the BrowserThread objects.  This array is protected by |lock_|.
   // The threads are not owned by this array.  Typically, the threads are owned
   // on the UI thread by the g_browser_process object.  BrowserThreads remove
   // themselves from this array upon destruction.
   static BrowserThread* browser_threads_[ID_COUNT];
 };
 
 #endif  // CONTENT_BROWSER_BROWSER_THREAD_H_