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

ui/ozone/public/native_pixmap_types.h

+// Copyright 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_NATIVE_PIXMAP_TYPES_H_
+#define UI_OZONE_PUBLIC_NATIVE_PIXMAP_TYPES_H_
+
+namespace ui {
+
+// TODO: this is a placeholder for now and will be populated with more
+// formats once we know what sorts of content, video, etc. we can support.
+enum NativePixmapFormat {

[spang, 2015/08/01 02:14:56]

enum class NativePixmapFormat {
  BGRA_8888,
  RGBX_8888,
  LAST = RGBX_8888
};

ui::NativePixmapFormat::BGRA_8888

but note that I have another change pending that makes this part unnecessary:

  https://codereview.chromium.org/1269503007/

[dshwang, 2015/08/03 12:51:49]

Good to know. I rebase this CL based on your CL. Let me wait for landing your
CL.

+  NATIVE_PIXMAP_FORMAT_BGRA_8888,
+  NATIVE_PIXMAP_FORMAT_RGBX_8888,
+  NATIVE_PIXMAP_FORMAT_LAST = NATIVE_PIXMAP_FORMAT_RGBX_8888
+};
+
+enum NativePixmapUsage {

[spang, 2015/08/01 02:14:56]

enum class NativePixmapUsage {
  MAP,
  PERSISTENT_MAP,
  SCANOUT,
  LAST = SCANOUT
};

ui::NativePixmapUsage::MAP

[dshwang, 2015/08/03 12:51:49]

Done.

+  NATIVE_PIXMAP_USAGE_MAP,
+  NATIVE_PIXMAP_USAGE_PERSISTENT_MAP,
+  NATIVE_PIXMAP_USAGE_SCANOUT,
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PUBLIC_NATIVE_PIXMAP_TYPES_H_