Convert Ozone GBM to use new surface API.

ui/ozone/platform/drm/gpu/gbm_surfaceless.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2016 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_DRM_GPU_GBM_SURFACELESS_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACELESS_H_
 
+#include <memory>
 #include <vector>
 
 #include "base/macros.h"
+#include "base/memory/scoped_vector.h"
+#include "base/memory/weak_ptr.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gl/gl_image.h"
+#include "ui/gl/gl_surface_egl.h"
+#include "ui/gl/gl_surface_overlay.h"
+#include "ui/gl/scoped_binders.h"
 #include "ui/ozone/platform/drm/gpu/overlay_plane.h"
-#include "ui/ozone/public/surface_ozone_egl.h"
-
-namespace gfx {
-class Size;
-}
 
 namespace ui {
 
 class DrmWindowProxy;
 class GbmSurfaceFactory;
 
-// In surfaceless mode drawing and displaying happens directly through
-// NativePixmap buffers. CC would call into SurfaceFactoryOzone to allocate the
-// buffers and then call ScheduleOverlayPlane(..) to schedule the buffer for
-// presentation.
-class GbmSurfaceless : public SurfaceOzoneEGL {
+// A GLSurface for GBM Ozone platform that uses surfaceless drawing. Drawing and
+// displaying happens directly through NativePixmap buffers. CC would call into
+// SurfaceFactoryOzone to allocate the buffers and then call
+// ScheduleOverlayPlane(..) to schedule the buffer for presentation.
+class GbmSurfaceless : public gl::SurfacelessEGL {
  public:
-  GbmSurfaceless(std::unique_ptr<DrmWindowProxy> window,
-                 GbmSurfaceFactory* surface_manager);
-  ~GbmSurfaceless() override;
+  GbmSurfaceless(GbmSurfaceFactory* surface_factory,
+                 std::unique_ptr<DrmWindowProxy> window,
+                 gfx::AcceleratedWidget widget);
 
   void QueueOverlayPlane(const OverlayPlane& plane);
 
-  // SurfaceOzoneEGL:
-  intptr_t GetNativeWindow() override;
-  bool ResizeNativeWindow(const gfx::Size& viewport_size) override;
-  bool OnSwapBuffers() override;
-  void OnSwapBuffersAsync(const SwapCompletionCallback& callback) override;
-  std::unique_ptr<gfx::VSyncProvider> CreateVSyncProvider() override;
-  bool IsUniversalDisplayLinkDevice() override;
-  void* /* EGLConfig */ GetEGLSurfaceConfig(
-      const EglConfigCallbacks& egl) override;
+  // gl::GLSurface:
+  bool Initialize(GLSurface::Format format) override;
+  gfx::SwapResult SwapBuffers() override;
+  bool ScheduleOverlayPlane(int z_order,
+                            gfx::OverlayTransform transform,
+                            gl::GLImage* image,
+                            const gfx::Rect& bounds_rect,
+                            const gfx::RectF& crop_rect) override;
+  bool IsOffscreen() override;
+  gfx::VSyncProvider* GetVSyncProvider() override;
+  bool SupportsAsyncSwap() override;
+  bool SupportsPostSubBuffer() override;
+  gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
+  void SwapBuffersAsync(const SwapCompletionCallback& callback) override;
+  void PostSubBufferAsync(int x,
+                          int y,
+                          int width,
+                          int height,
+                          const SwapCompletionCallback& callback) override;
+  EGLConfig GetConfig() override;
 
  protected:
+  ~GbmSurfaceless() override;
+
+  gfx::AcceleratedWidget widget() { return widget_; }
+  GbmSurfaceFactory* surface_factory() { return surface_factory_; }
+
+ private:
+  struct PendingFrame {
+    PendingFrame();
+    ~PendingFrame();
+
+    bool ScheduleOverlayPlanes(gfx::AcceleratedWidget widget);
+    void Flush();
+
+    bool ready = false;
+    std::vector<gl::GLSurfaceOverlay> overlays;
+    SwapCompletionCallback callback;
+  };
+
+  void SubmitFrame();
+
+  EGLSyncKHR InsertFence(bool implicit);
+  void FenceRetired(EGLSyncKHR fence, PendingFrame* frame);
+
+  void SwapCompleted(const SwapCompletionCallback& callback,
+                     gfx::SwapResult result);
+
+  bool IsUniversalDisplayLinkDevice();
+
+  GbmSurfaceFactory* surface_factory_;
   std::unique_ptr<DrmWindowProxy> window_;
-
-  GbmSurfaceFactory* surface_manager_;
-
   std::vector<OverlayPlane> planes_;
 
- private:
+  // The native surface. Deleting this is allowed to free the EGLNativeWindow.
+  gfx::AcceleratedWidget widget_;
+  std::unique_ptr<gfx::VSyncProvider> vsync_provider_;
+  ScopedVector<PendingFrame> unsubmitted_frames_;
+  bool has_implicit_external_sync_;
+  bool has_image_flush_external_;
+  bool last_swap_buffers_result_ = true;
+  bool swap_buffers_pending_ = false;
+
+  base::WeakPtrFactory<GbmSurfaceless> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(GbmSurfaceless);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACELESS_H_