ozone: Introduce ClientPixmap and ClientPixmapFactory for non-GPU processes.

ui/ozone/public/surface_client_factory_ozone.h

+// Copyright (c) 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.
+
+#ifndef UI_OZONE_PUBLIC_SURFACE_CLIENT_FACTORY_OZONE_H_
+#define UI_OZONE_PUBLIC_SURFACE_CLIENT_FACTORY_OZONE_H_
+
+#include "ui/ozone/public/surface_factory_ozone.h"
+
+namespace ui {
+
+// The Ozone interface allows external implementations to hook into Chromium to
+// provide the handle of a system specific surface implementation for Browser
+// and Render process.
+class OZONE_BASE_EXPORT SurfaceClientFactoryOzone {
+ public:
+  SurfaceClientFactoryOzone();
+  virtual ~SurfaceClientFactoryOzone();
+
+  struct Configuration {
+    SurfaceFactoryOzone::BufferFormat format;
+    SurfaceFactoryOzone::BufferUsage usage;
+  };
+
+  // Gets supported format/usage configurations.
+  virtual std::vector<Configuration> GetSupportedNativePixmapConfigurations()
+      const;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SurfaceClientFactoryOzone);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PUBLIC_SURFACE_CLIENT_FACTORY_OZONE_H_