OSCrypt supports encryption with KWallet

components/os_crypt/key_storage_kwallet.h

Index: components/os_crypt/key_storage_kwallet.h
diff --git a/components/os_crypt/key_storage_kwallet.h b/components/os_crypt/key_storage_kwallet.h
new file mode 100644
index 0000000000000000000000000000000000000000..35edcf2fd1c327b1ba9a99b5079931ca0af31f0c
--- /dev/null
+++ b/components/os_crypt/key_storage_kwallet.h
@@ -0,0 +1,55 @@
+// Copyright 2016 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 COMPONENTS_OS_CRYPT_KEY_STORAGE_KWALLET_H_
+#define COMPONENTS_OS_CRYPT_KEY_STORAGE_KWALLET_H_
+
+#include <memory>
+#include <string>
+
+#include "base/macros.h"
+#include "components/os_crypt/key_storage_linux.h"
+#include "components/os_crypt/kwallet_dbus.h"
+
+class KeyStorageKWallet : public KeyStorageLinux {
+ public:
+  KeyStorageKWallet(base::nix::DesktopEnvironment desktop_env,
+                    std::string app_name);
+  ~KeyStorageKWallet() override;
+
+  // KeyStorageLinux
+  std::string GetKey() override;
+
+  // Initialize using an optional KWalletDBus mock.
+  // A DBus session will not be created if a mock is provided.
+  bool InitWithKWalletDBus(
+      std::unique_ptr<KWalletDBus> optional_kwallet_dbus_ptr);
+
+ protected:
+  // KeyStorageLinux
+  bool Init() override;
+
+ private:
+  enum class InitResult {
+    SUCCESS,
+    TEMPORARY_FAIL,
+    PERMANENT_FAIL,
+  };
+
+  // Check whether KWallet is enabled and set |wallet_name_|
+  InitResult InitWallet();
+
+  // Create Chrome's folder in the wallet, if it doesn't exist.
+  bool InitFolder();
+
+  const base::nix::DesktopEnvironment desktop_env_;
+  int32_t handle_;
+  std::string wallet_name_;
+  const std::string app_name_;
+  std::unique_ptr<KWalletDBus> kwallet_dbus_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyStorageKWallet);
+};
+
+#endif  // COMPONENTS_OS_CRYPT_KEY_STORAGE_KWALLET_H_