prune down content_dll change to just the CONTENT_EXPORTS

content/browser/accessibility/browser_accessibility_state.h

 // Copyright (c) 2010 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_ACCESSIBILITY_BROWSER_ACCESSIBILITY_STATE_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_STATE_H_
 #pragma once
 
 #include "base/basictypes.h"
+#include "content/common/content_export.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
 // The BrowserAccessibilityState class is used to determine if Chrome should be
 // customized for users with assistive technology, such as screen readers. We
 // modify the behavior of certain user interfaces to provide a better experience
 // for screen reader users. The way we detect a screen reader program is
 // different for each platform.
 //
 // Screen Reader Detection
 // (1) On windows many screen reader detection mechinisms will give false
 // positives like relying on the SPI_GETSCREENREADER system parameter. In Chrome
 // we attempt to dynamically detect a MSAA client screen reader by calling
 // NotifiyWinEvent in NativeWidgetWin with a custom ID and wait to see if the ID
 // is requested by a subsequent call to WM_GETOBJECT.
 // (2) On mac we detect dynamically if VoiceOver is running.  We rely upon the
 // undocumented accessibility attribute @"AXEnhancedUserInterface" which is set
 // when VoiceOver is launched and unset when VoiceOver is closed.  This is an
 // improvement over reading defaults preference values (which has no callback
 // mechanism).
-class BrowserAccessibilityState {
+class CONTENT_EXPORT BrowserAccessibilityState {
  public:
   // Returns the singleton instance.
   static BrowserAccessibilityState* GetInstance();
 
   ~BrowserAccessibilityState();
 
   // Called when screen reader client is detected.
   void OnScreenReaderDetected();
 
   // Returns true if the browser should be customized for accessibility.
   bool IsAccessibleBrowser();
 
  private:
   BrowserAccessibilityState();
   friend struct DefaultSingletonTraits<BrowserAccessibilityState>;
 
   // Set to true when a screen reader client is detected.
   bool screen_reader_active_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityState);
 };
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_STATE_H_