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

ui/ozone/platform/drm/common/client_pixmap_manager_gbm.cc

+// 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.
+
+#include "ui/ozone/platform/drm/common/client_pixmap_manager_gbm.h"
+
+#include "base/file_descriptor_posix.h"
+#include "ui/ozone/public/client_pixmap_manager.h"
+
+namespace ui {
+
+namespace {
+
+class ClientPixmapManagerGbm : public ClientPixmapManager {
+ public:
+  ClientPixmapManagerGbm() {}
+  ~ClientPixmapManagerGbm() override {}
+
+  // ClientPixmapManager:
+  std::vector<Configuration> GetSupportedConfigurations() const override {
+    std::vector<Configuration> configurations = {
+        {PIXMAP_FORMAT_BGRA_8888, PIXMAP_USAGE_SCANOUT},
+        {PIXMAP_FORMAT_RGBX_8888, PIXMAP_USAGE_SCANOUT}};
+    return configurations;
+  }
+  scoped_ptr<ClientPixmap> ImportClientPixmap(base::FileDescriptor handle,
+                                              gfx::Size size,
+                                              PixmapFormat format,
+                                              PixmapUsage usage) override {
+    NOTIMPLEMENTED();
+    return nullptr;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ClientPixmapManagerGbm);
+};
+
+}  // namespace
+
+ClientPixmapManager* CreateClientPixmapManagerGbm() {
+  return new ClientPixmapManagerGbm();
+}
+
+}  // namespace ui