Add export directives needed by Chromium WM project.

content/browser/renderer_host/image_transport_factory.h

 // Copyright (c) 2012 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_IMAGE_TRANSPORT_FACTORY_H_
 #define CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_FACTORY_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
+#include "content/common/content_export.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace ui {
 class ContextFactory;
 class Texture;
 }
@@ skipping 18 matching lines @@
   // return newly recreated, valid resources.
   virtual void OnLostResources() = 0;
 };
 
 // This class provides the interface for creating the support for the
 // cross-process image transport, both for creating the shared surface handle
 // (destination surface for the GPU process) and the transport client (logic for
 // using that surface as a texture). The factory is a process-wide singleton.
 // As this is intimately linked to the type of 3D context we use (in-process or
 // command-buffer), implementations of this also implement ui::ContextFactory.
-class ImageTransportFactory {
+class CONTENT_EXPORT ImageTransportFactory {
  public:
   virtual ~ImageTransportFactory() {}
 
   // Initialize the global transport factory.
   static void Initialize();
 
   // Terminates the global transport factory.
   static void Terminate();
 
   // Gets the factory instance.
@@ skipping 29 matching lines @@
   // Inserts a SyncPoint into the shared context.
   virtual uint32 InsertSyncPoint() = 0;
 
   virtual void AddObserver(ImageTransportFactoryObserver* observer) = 0;
   virtual void RemoveObserver(ImageTransportFactoryObserver* observer) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_FACTORY_H_