Index: extensions/browser/updater/update_install_shim.h |
diff --git a/extensions/browser/updater/update_install_shim.h b/extensions/browser/updater/update_install_shim.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..586e94e2167a60a30f7bd80d8d5321d62ba7f7cf |
--- /dev/null |
+++ b/extensions/browser/updater/update_install_shim.h |
@@ -0,0 +1,76 @@ |
+// 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 EXTENSIONS_BROWSER_UPDATER_UPDATE_INSTALL_SHIM_H_ |
+#define EXTENSIONS_BROWSER_UPDATER_UPDATE_INSTALL_SHIM_H_ |
+ |
+#include <string> |
+ |
+#include "base/callback.h" |
+#include "base/files/file_path.h" |
+#include "components/update_client/update_client.h" |
+ |
+namespace base { |
+class DictionaryValue; |
+} |
+ |
+namespace extensions { |
+ |
+// A callback to implement the install of a new version of the extension. |
+// Takes ownership of the directory at |temp_dir|. |
+using UpdateInstallShimCallback = |
+ base::Callback<void(const std::string& extension_id, |
+ const base::FilePath& temp_dir)>; |
+ |
+// This class is used as a shim between the components::update_client and |
+// extensions code, to help the generic update_client code prepare and then |
+// install an updated version of an extension. Because the update_client code |
+// doesn't have the notion of extension ids, we use instances of this class to |
+// map an install request back to the original update check for a given |
+// extension. |
+class UpdateInstallShim : public update_client::CrxInstaller { |
+ public: |
+ // This method takes the id and root directory for an extension we're doing |
+ // an update check for, as well as a callback to call if we get a new version |
+ // of it to install. |
+ UpdateInstallShim(std::string extension_id, |
+ const base::FilePath& extension_root, |
+ const UpdateInstallShimCallback& callback); |
+ |
+ // Called when an update attempt failed. |
+ void OnUpdateError(int error) override; |
+ |
+ // This is called when a new version of an extension is unpacked at |
+ // |unpack_path| and is ready for install. |
+ bool Install(const base::DictionaryValue& manifest, |
+ const base::FilePath& unpack_path) override; |
+ |
+ // This is called by the generic differential update code in the |
+ // update_client to provide the path to an existing file in the current |
+ // version of the extension, so that it can be copied (or serve as the input |
+ // to diff-patching) with output going to the directory with the new version |
+ // being staged on disk for install. |
+ bool GetInstalledFile(const std::string& file, |
+ base::FilePath* installed_file) override; |
+ |
+ // This method is not relevant to extension updating. |
+ bool Uninstall() override; |
+ |
+ private: |
+ friend class base::RefCountedThreadSafe<UpdateInstallShim>; |
+ ~UpdateInstallShim() override; |
+ |
+ // Takes ownership of the directory at path |temp_dir|. |
+ void RunCallbackOnUIThread(const base::FilePath& temp_dir); |
+ |
+ std::string extension_id_; |
+ base::FilePath extension_root_; |
+ UpdateInstallShimCallback callback_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(UpdateInstallShim); |
+}; |
+ |
+} // namespace extensions |
+ |
+#endif // EXTENSIONS_BROWSER_UPDATER_UPDATE_INSTALL_SHIM_H_ |