Remove KEYBOARD_EXPORT.

ui/keyboard/content/keyboard_ui_content.h

 // Copyright 2015 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 UI_KEYBOARD_CONTENT_KEYBOARD_UI_CONTENT_H_
 #define UI_KEYBOARD_CONTENT_KEYBOARD_UI_CONTENT_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 16 matching lines @@
 namespace wm {
 class Shadow;
 }
 
 namespace keyboard {
 
 class WindowBoundsChangeObserver;
 
 // An implementation of KeyboardUI that uses a content::WebContents to implement
 // the keyboard.
-class KEYBOARD_EXPORT KeyboardUIContent : public KeyboardUI,
+class  KeyboardUIContent : public KeyboardUI,
                                           public aura::WindowObserver {
  public:
   class TestApi {
    public:
     explicit TestApi(KeyboardUIContent* ui) : ui_(ui) {}
 
     const content::WebContents* keyboard_contents() {
       return ui_->keyboard_contents_.get();
     }
 
@@ skipping 70 matching lines @@
   std::unique_ptr<wm::Shadow> shadow_;
 
   std::unique_ptr<WindowBoundsChangeObserver> window_bounds_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardUIContent);
 };
 
 }  // namespace keyboard
 
 #endif  // UI_KEYBOARD_CONTENT_KEYBOARD_UI_CONTENT_H_