Install Chrome OS apps to shared location

chrome/browser/extensions/extension_assets_manager.cc

+// Copyright (c) 2014 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 "chrome/browser/extensions/extension_assets_manager.h"
+
+#include "base/memory/singleton.h"
+#include "extensions/common/extension.h"
+#include "extensions/common/file_util.h"
+
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/extensions/extension_assets_manager_chromeos.h"
+#endif
+
+namespace extensions {
+namespace {
+
+class ExtensionAssetsManagerImpl :  public ExtensionAssetsManager {
+ public:
+  // Copy extension assets to final location. This location could be under
+  // |local_install_dir| or some common location shared for multiple users.

[asargent_no_longer_on_chrome, 2014/05/20 21:20:25]

looks like this comment is out of date?

[Dmitry Polukhin, 2014/05/20 23:42:16]

Done.

+  virtual void InstallExtension(const Extension* extension,
+                                const base::FilePath& unpacked_extension_root,
+                                const base::FilePath& local_install_dir,
+                                Profile* profile,
+                                InstallExtensionCallback callback) OVERRIDE {
+    callback.Run(file_util::InstallExtension(
+        unpacked_extension_root,
+        extension->id(),
+        extension->VersionString(),
+        local_install_dir));
+  }
+
+  // Remove extension assets if it is not used by anyone else.
+  virtual void UninstallExtension(
+      const std::string& id,
+      Profile* profile,
+      const base::FilePath& local_install_dir,
+      const base::FilePath& extension_root) OVERRIDE {
+    file_util::UninstallExtension(local_install_dir, id);
+  }
+
+ private:
+  friend struct DefaultSingletonTraits<ExtensionAssetsManagerImpl>;
+
+  ExtensionAssetsManagerImpl() {}
+  virtual ~ExtensionAssetsManagerImpl() {}
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionAssetsManagerImpl);
+};
+
+}  // namespace
+
+// static
+ExtensionAssetsManager* ExtensionAssetsManager::GetInstance() {
+#if defined(OS_CHROMEOS)
+  return ExtensionAssetsManagerChromeOS::GetInstance();
+#else
+  // If not Chrome OS, use trivial implementation that doesn't share anything.
+  return ExtensionAssetsManagerImpl::GetInstance();
+#endif  // OS_CHROMEOS
+}
+
+}  // namespace extensions