Universial component install for chrome os.

chrome/browser/component_updater/cros_component_installer.h

+// Copyright 2017 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 CHROME_BROWSER_COMPONENT_UPDATER_CROS_COMPONENT_INSTALLER_H_
+#define CHROME_BROWSER_COMPONENT_UPDATER_CROS_COMPONENT_INSTALLER_H_
+
+#include "base/json/json_file_value_serializer.h"
+#include "base/json/json_string_value_serializer.h"
+#include "base/task_scheduler/post_task.h"
+#include "base/task_scheduler/task_traits.h"
+#include "components/component_updater/default_component_installer.h"
+#include "crypto/sha2.h"
+
+namespace component_updater {
+
+class ComponentUpdateService;
+
+struct ComponentConfig {
+  std::string name;
+  std::string dir;
+  std::string sha2hashstr;
+};
+#if defined(OS_CHROMEOS)
+class CrOSComponentInstallerTraits : public ComponentInstallerTraits {
+ public:
+  CrOSComponentInstallerTraits(std::string dir_name,
+                               std::string name,
+                               std::string sha2HashStr);
+  ~CrOSComponentInstallerTraits() override {}
+
+ private:
+  // The following methods override ComponentInstallerTraits.
+  bool SupportsGroupPolicyEnabledComponentUpdates() const override;
+  bool RequiresNetworkEncryption() const override;
+  update_client::CrxInstaller::Result OnCustomInstall(
+      const base::DictionaryValue& manifest,
+      const base::FilePath& install_dir) override;
+  bool VerifyInstallation(const base::DictionaryValue& manifest,
+                          const base::FilePath& install_dir) const override;
+  void ComponentReady(const base::Version& version,
+                      const base::FilePath& path,
+                      std::unique_ptr<base::DictionaryValue> manifest) override;
+  base::FilePath GetRelativeInstallDir() const override;
+  void GetHash(std::vector<uint8_t>* hash) const override;
+  std::string GetName() const override;
+  update_client::InstallerAttributes GetInstallerAttributes() const override;
+  std::vector<std::string> GetMimeTypes() const override;
+  std::string dir_name;
+  std::string name;
+  uint8_t kSha2Hash_[crypto::kSHA256Length] = {};
+
+  DISALLOW_COPY_AND_ASSIGN(CrOSComponentInstallerTraits);
+};
+
+#endif  // defined(OS_CHROMEOS)
+
+// Register a CrOS component.
+// It must be called on UI thread.
+// It also assumes LoadCrOSConfig has finished loading configuration. Otherwise,

[waffles, 2017/03/02 18:52:39]

Comment is now out of date.

[xiaochu, 2017/03/02 19:24:10]

Done.

+// it does nothing.
+bool RegisterCrOSComponent(ComponentUpdateService* cus,
+                           const std::string& name);
+
+}  // namespace component_updater
+
+#endif  // CHROME_BROWSER_COMPONENT_UPDATER_CROS_COMPONENT_INSTALLER_H_