ozone: Add OzoneWindowFactory & OzoneWindow

ui/gfx/ozone/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_GFX_OZONE_SURFACE_LNUX_FACTORY_OZONE_H_
 #define UI_GFX_OZONE_SURFACE_LNUX_FACTORY_OZONE_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/native_library.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/gfx_export.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 class SkBitmap;
 class SkCanvas;
 
 namespace gfx {
 class VSyncProvider;
 class OverlayCandidatesOzone;
 class SurfaceOzone;
 typedef intptr_t NativeBufferOzone;
 
+// Widget for use by platforms that only support one surface at a time.
+// This is probably not useful for any real platform, but it makes
+// implementing simple platforms with only one surface easier.
+GFX_EXPORT extern const gfx::AcceleratedWidget
+  kDefaultAcceleratedWidgetForSingleWindow;
+
 // The Ozone interface allows external implementations to hook into Chromium to
 // provide a system specific implementation. The Ozone interface supports two
 // drawing modes: 1) accelerated drawing through EGL and 2) software drawing
 // through Skia.
 //
 // The following functionality is specific to the drawing mode and may not have
 // any meaningful implementation in the other mode. An implementation must
 // provide functionality for at least one mode.
 //
 // 1) Accelerated Drawing (EGL path):
@@ skipping 62 matching lines @@
   virtual HardwareState InitializeHardware() = 0;
 
   // Cleans up display hardware state. Call this from within the GPU process.
   // This method must be safe to run inside of the sandbox.
   virtual void ShutdownHardware() = 0;
 
   // Returns native platform display handle. This is used to obtain the EGL
   // display connection for the native display.
   virtual intptr_t GetNativeDisplay();
 
-  // Obtains an AcceleratedWidget backed by a native Linux framebuffer.
-  // The  returned AcceleratedWidget is an opaque token that must realized
-  // before it can be used to create a GL surface.
-  virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
-
   // Create a surface for the specified gfx::AcceleratedWidget.
   virtual scoped_ptr<SurfaceOzone> CreateSurfaceForWidget(
       gfx::AcceleratedWidget widget);
 
   // Sets up GL bindings for the native surface. Takes two callback parameters
   // that allow Ozone to register the GL bindings.
   virtual bool LoadEGLGLES2Bindings(
       AddGLLibraryCallback add_gl_library,
       SetGLGetProcAddressProcCallback set_gl_get_proc_address) = 0;
 
@@ skipping 28 matching lines @@
   virtual gfx::NativeBufferOzone CreateNativeBuffer(gfx::Size size,
                                                     BufferFormat format);
 
  private:
   static SurfaceFactoryOzone* impl_; // not owned
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_OZONE_SURFACE_LNUX_FACTORY_OZONE_H_