Add a couple of linux-specific exports for the content component build.

content/browser/renderer_host/render_widget_host_view.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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 #pragma once
 
 #if defined(OS_MACOSX)
 #include <OpenGL/OpenGL.h>
@@ skipping 154 matching lines @@
                               int error_code) = 0;
 
   // Tells the View to destroy itself.
   virtual void Destroy() = 0;
 
   // Tells the View that the tooltip text for the current mouse position over
   // the page has changed.
   virtual void SetTooltipText(const string16& tooltip_text) = 0;
 
   // Notifies the View that the renderer text selection has changed.
-  virtual void SelectionChanged(const string16& text,
-                                size_t offset,
-                                const ui::Range& range);
+  CONTENT_EXPORT virtual void SelectionChanged(const string16& text,
+                                               size_t offset,
+                                               const ui::Range& range);
 
   // Notifies the View that the renderer selection bounds has changed.
   // |start_rect| and |end_rect| are the bounds end of the selection in the
   // coordinate system of the render view.
   virtual void SelectionBoundsChanged(const gfx::Rect& start_rect,
                                       const gfx::Rect& end_rect) {}
 
   // Tells the View whether the context menu is showing. This is used on Linux
   // to suppress updates to webkit focus for the duration of the show.
   virtual void ShowingContextMenu(bool showing) {}
@@ skipping 174 matching lines @@
   size_t selection_text_offset_;
 
   // The current selection range relative to the start of the web page.
   ui::Range selection_range_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostView);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_