VaapiVideoAccelerator: make Vaapi accelerator work with ozone

ui/ozone/public/surface_factory_ozone.h

 // Copyright (c) 2013 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_OZONE_PUBLIC_SURFACE_FACTORY_OZONE_H_
 #define UI_OZONE_PUBLIC_SURFACE_FACTORY_OZONE_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/native_library.h"
@@ skipping 65 matching lines @@
   SurfaceFactoryOzone();
   virtual ~SurfaceFactoryOzone();
 
   // Returns the singleton instance.
   static SurfaceFactoryOzone* GetInstance();
 
   // Returns native platform display handle. This is used to obtain the EGL
   // display connection for the native display.
   virtual intptr_t GetNativeDisplay();
 
+  // Returns Drm file descriptor. This is used to obtain access to the
+  // driver interface by other API than GL.
+  virtual int GetDrmFd();

[spang, 2014/09/08 18:04:00]

dnicoara reminded me to point out: We don't intend to approve hooks like this in
general, as this function really is too prescriptive to be in the (platform &
architecture-independent) ozone public interface.

posciak@: We need to work to push VDA construction downwards (out of content),
so that we can avoid adding more of these hooks.

+
   // Create SurfaceOzoneEGL for the specified gfx::AcceleratedWidget.
   //
   // Note: When used from content, this is called in the GPU process. The
   // platform must support creation of SurfaceOzoneEGL from the GPU process
   // using only the handle contained in gfx::AcceleratedWidget.
   virtual scoped_ptr<SurfaceOzoneEGL> CreateEGLSurfaceForWidget(
       gfx::AcceleratedWidget widget);
 
   // Create an EGL surface that isn't backed by any buffers, and is used
   // for overlay-only displays. This will return NULL if this mode is
@@ skipping 53 matching lines @@
   // overlay-only mode.
   virtual bool CanShowPrimaryPlaneAsOverlay();
 
  private:
   static SurfaceFactoryOzone* impl_;  // not owned
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PUBLIC_SURFACE_FACTORY_OZONE_H_