Implement DRM Native Pixmap using prime buffer

ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc

 // Copyright 2015 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.
 
 #include "ui/ozone/platform/cast/client_native_pixmap_factory_cast.h"
 
 #include "base/logging.h"
 #include "ui/gfx/buffer_types.h"
 #include "ui/ozone/public/client_native_pixmap.h"
 #include "ui/ozone/public/client_native_pixmap_factory.h"
@@ skipping 11 matching lines @@
     NOTREACHED();
     return nullptr;
   }
   void Unmap() override { NOTREACHED(); }
   void GetStride(int* stride) const override { NOTREACHED(); }
 };
 
 class ClientNativePixmapFactoryCast : public ClientNativePixmapFactory {
  public:
   // ClientNativePixmapFactoryCast implementation:
-  void Initialize(base::ScopedFD device_fd) override {}
-
   bool IsConfigurationSupported(gfx::BufferFormat format,
                                 gfx::BufferUsage usage) const override {
     return format == gfx::BufferFormat::RGBA_8888 &&
            usage == gfx::BufferUsage::SCANOUT;
   }
 
   scoped_ptr<ClientNativePixmap> ImportFromHandle(
       const gfx::NativePixmapHandle& handle,
       const gfx::Size& size,
       gfx::BufferUsage usage) override {
     return make_scoped_ptr(new ClientNativePixmapCast());
   }
 };
 
 }  // namespace
 
 ClientNativePixmapFactory* CreateClientNativePixmapFactoryCast() {
   return new ClientNativePixmapFactoryCast();
 }
 
 }  // namespace ui