Add ability to query and allocate zero copy buffers.

ui/ozone/platform/dri/gbm_surface_factory.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 UI_OZONE_PLATFORM_DRI_GBM_SURFACE_FACTORY_H_
 #define UI_OZONE_PLATFORM_DRI_GBM_SURFACE_FACTORY_H_
 
 #include "ui/ozone/platform/dri/dri_surface_factory.h"
 
 struct gbm_device;
 
 namespace ui {
 
 class DriWindowDelegate;
 class DriWindowDelegateManager;
 
 class GbmSurfaceFactory : public DriSurfaceFactory {
  public:
   GbmSurfaceFactory(bool allow_surfaceless);
   virtual ~GbmSurfaceFactory();
 
   void InitializeGpu(DriWrapper* dri,
                      gbm_device* device,
                      ScreenManager* screen_manager,
                      DriWindowDelegateManager* window_manager);
 
   // DriSurfaceFactory:
-  virtual intptr_t GetNativeDisplay() override;
-  virtual const int32_t* GetEGLSurfaceProperties(
-      const int32_t* desired_list) override;
-  virtual bool LoadEGLGLES2Bindings(
+  intptr_t GetNativeDisplay() override;
+  const int32_t* GetEGLSurfaceProperties(const int32_t* desired_list) override;
+  bool LoadEGLGLES2Bindings(
       AddGLLibraryCallback add_gl_library,
       SetGLGetProcAddressProcCallback set_gl_get_proc_address) override;
-  virtual scoped_ptr<ui::SurfaceOzoneEGL> CreateEGLSurfaceForWidget(
+  scoped_ptr<ui::SurfaceOzoneEGL> CreateEGLSurfaceForWidget(
       gfx::AcceleratedWidget w) override;
-  virtual scoped_ptr<SurfaceOzoneEGL> CreateSurfacelessEGLSurfaceForWidget(
+  scoped_ptr<SurfaceOzoneEGL> CreateSurfacelessEGLSurfaceForWidget(
       gfx::AcceleratedWidget widget) override;
-  virtual scoped_refptr<ui::NativePixmap> CreateNativePixmap(
+  scoped_refptr<ui::NativePixmap> CreateNativePixmap(
       gfx::Size size,
-      BufferFormat format) override;
-  virtual OverlayCandidatesOzone* GetOverlayCandidates(
+      BufferFormat format,
+      BufferUsage usage) override;
+  OverlayCandidatesOzone* GetOverlayCandidates(
       gfx::AcceleratedWidget w) override;
-  virtual bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
-                                    int plane_z_order,
-                                    gfx::OverlayTransform plane_transform,
-                                    scoped_refptr<NativePixmap> buffer,
-                                    const gfx::Rect& display_bounds,
-                                    const gfx::RectF& crop_rect) override;
-  virtual bool CanShowPrimaryPlaneAsOverlay() override;
+  bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
+                            int plane_z_order,
+                            gfx::OverlayTransform plane_transform,
+                            scoped_refptr<NativePixmap> buffer,
+                            const gfx::Rect& display_bounds,
+                            const gfx::RectF& crop_rect) override;
+  bool CanShowPrimaryPlaneAsOverlay() override;
+  bool CanCreateNativePixmap(BufferUsage usage) override;
 
  private:
   DriWindowDelegate* GetOrCreateWindowDelegate(gfx::AcceleratedWidget widget);
 
   gbm_device* device_;  // Not owned.
   bool allow_surfaceless_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmSurfaceFactory);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_GBM_SURFACE_FACTORY_H_