content: Move type selection logic out of GpuMemoryBufferImpl.

content/common/android/surface_texture_manager.h

 // Copyright 2014 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_COMMON_ANDROID_SURFACE_TEXTURE_MANAGER_H_
 #define CONTENT_COMMON_ANDROID_SURFACE_TEXTURE_MANAGER_H_
 
+#include "content/common/content_export.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
 class SurfaceTexture;
 }
 
 namespace content {
 
-class SurfaceTextureManager {
+class CONTENT_EXPORT SurfaceTextureManager {
  public:
   static SurfaceTextureManager* GetInstance();
   static void InitInstance(SurfaceTextureManager* instance);
 
   // Register a surface texture for use in another process.
   virtual void RegisterSurfaceTexture(int surface_texture_id,
                                       int client_id,
                                       gfx::SurfaceTexture* surface_texture) = 0;
 
   // Unregister a surface texture previously registered for use in another
   // process.
   virtual void UnregisterSurfaceTexture(int surface_texture_id,
                                         int client_id) = 0;
 
   // Acquire native widget for a registered surface texture.
   virtual gfx::AcceleratedWidget AcquireNativeWidgetForSurfaceTexture(
       int surface_texture_id) = 0;
 
  protected:
   virtual ~SurfaceTextureManager() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_ANDROID_SURFACE_TEXTURE_MANAGER_H_