Mark a class for export to fix component build for views_unittests on touchui.

views/touchui/touch_selection_controller_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 VIEWS_TOUCHUI_TOUCH_SELECTION_CONTROLLER_IMPL_H_
 #define VIEWS_TOUCHUI_TOUCH_SELECTION_CONTROLLER_IMPL_H_
 #pragma once
 
 #include "ui/gfx/point.h"
 #include "views/touchui/touch_selection_controller.h"
 #include "views/view.h"
+#include "views/views_export.h"
 
 namespace views {
 
 // Touch specific implementation of TouchSelectionController. Responsible for
 // displaying selection handles and menu elements relevant in a touch interface.
-class TouchSelectionControllerImpl : public TouchSelectionController {
+class VIEWS_EXPORT TouchSelectionControllerImpl
+    : public TouchSelectionController {
  public:
   // Use TextSelectionController::create().
   explicit TouchSelectionControllerImpl(TouchSelectionClientView* client_view);
 
   virtual ~TouchSelectionControllerImpl();
 
   // TextSelectionController.
   virtual void SelectionChanged(const gfx::Point& p1,
                                 const gfx::Point& p2) OVERRIDE;
 
@@ skipping 23 matching lines @@
 
   // Pointer to the SelectionHandleView being dragged during a drag session.
   SelectionHandleView* dragging_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerImpl);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_TOUCHUI_TOUCH_SELECTION_CONTROLLER_IMPL_H_