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

ui/ozone/platform/drm/common/client_native_pixmap_factory_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_native_pixmap_factory_gbm.h"
+
+#include "base/file_descriptor_posix.h"
+#include "ui/ozone/public/client_native_pixmap_factory.h"
+
+namespace ui {
+
+namespace {
+
+class ClientNativePixmapFactoryGbm : public ClientNativePixmapFactory {
+ public:
+  ClientNativePixmapFactoryGbm() {}
+  ~ClientNativePixmapFactoryGbm() override {}
+
+  // ClientNativePixmapFactory:
+  std::vector<Configuration> GetSupportedConfigurations() const override {
+    const Configuration kConfiguratioins[] = {
+        {gfx::BufferFormat::BGRA_8888, gfx::BufferUsage::SCANOUT},
+        {gfx::BufferFormat::RGBX_8888, gfx::BufferUsage::SCANOUT}};
+    std::vector<Configuration> configurations(
+        kConfiguratioins, kConfiguratioins + arraysize(kConfiguratioins));
+    return configurations;
+  }
+  scoped_ptr<ClientNativePixmap> ImportNativePixmap(
+      const base::FileDescriptor& handle,
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      gfx::BufferUsage usage) override {
+    NOTIMPLEMENTED();
+    return nullptr;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ClientNativePixmapFactoryGbm);
+};
+
+}  // namespace
+
+ClientNativePixmapFactory* CreateClientNativePixmapFactoryGbm() {
+  return new ClientNativePixmapFactoryGbm();
+}
+
+}  // namespace ui