Add plane manager to the atomic swap path.

ui/ozone/platform/dri/hardware_display_plane.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_HARDWARE_DISPLAY_PLANE_H_
 #define UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_PLANE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <xf86drmMode.h>
@@ skipping 12 matching lines @@
 class HardwareDisplayPlane {
  public:
   HardwareDisplayPlane(DriWrapper* drm,
                        drmModePropertySetPtr atomic_property_set,
                        ScopedDrmPlanePtr plane);
 
   ~HardwareDisplayPlane();
 
   bool Initialize();
 
+  bool CanUseForCrtc(uint32_t crtc_id);
   bool SetPlaneData(uint32_t crtc_id,
                     uint32_t framebuffer,
                     const gfx::Rect& crtc_rect,
                     const gfx::Rect& src_rect);
 
+  bool in_use() const { return in_use_; }
+  void set_in_use(bool in_use) { in_use_ = in_use; }
+
  private:
   struct Property {
     Property();
     bool Initialize(DriWrapper* drm,
                     const char* name,
                     const ScopedDrmObjectPropertyPtr& plane_properties);
     uint32_t id_;
   };
   // Object containing the connection to the graphics device and wraps the API
   // calls to control it.
   DriWrapper* drm_;
 
   // Not owned.
   drmModePropertySetPtr property_set_;
 
   ScopedDrmPlanePtr plane_;
   uint32_t plane_id_;
+  bool in_use_;
 
   Property crtc_prop_;
   Property fb_prop_;
   Property crtc_x_prop_;
   Property crtc_y_prop_;
   Property crtc_w_prop_;
   Property crtc_h_prop_;
   Property src_x_prop_;
   Property src_y_prop_;
   Property src_w_prop_;
   Property src_h_prop_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareDisplayPlane);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_PLANE_H_