UMA statistics for Linux password storage backend usage

chrome/browser/password_manager/password_store_factory.h

 // Copyright (c) 2012 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_PASSWORD_MANAGER_PASSWORD_STORE_FACTORY_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/keyed_service/core/service_access_type.h"
 
+#if defined(USE_X11)
+#include "base/nix/xdg_util.h"
+#endif
+
 class Profile;
 
 namespace password_manager {
 class PasswordStore;
 }
 
 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS) && defined(OS_POSIX)
 // Local profile ids are used to associate resources stored outside the profile
 // directory, like saved passwords in GNOME Keyring / KWallet, with a profile.
 // With high probability, they are unique on the local machine. They are almost
@@ skipping 42 matching lines @@
 
   // BrowserContextKeyedServiceFactory:
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
   void RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable* registry) override;
   content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
   bool ServiceIsNULLWhileTesting() const override;
 
+#if defined(USE_X11)
+  enum LinuxBackendUsage {
+    KDE_NOFLAG_PLAINTEXT,
+    KDE_NOFLAG_KWALLET,
+    KDE_KWALLETFLAG_PLAINTEXT,
+    KDE_KWALLETFLAG_KWALLET,
+    KDE_GNOMEFLAG_PLAINTEXT,
+    KDE_GNOMEFLAG_KEYRING,
+    KDE_GNOMEFLAG_LIBSECRET,
+    KDE_BASICFLAG_PLAINTEXT,
+    GNOME_NOFLAG_PLAINTEXT,
+    GNOME_NOFLAG_KEYRING,
+    GNOME_NOFLAG_LIBSECRET,
+    GNOME_GNOMEFLAG_PLAINTEXT,
+    GNOME_GNOMEFLAG_KEYRING,
+    GNOME_GNOMEFLAG_LIBSECRET,
+    GNOME_KWALLETFLAG_PLAINTEXT,
+    GNOME_KWALLETFLAG_KWALLET,
+    GNOME_BASICFLAG_PLAINTEXT,
+    OTHER_PLAINTEXT,

[vabr (Chromium), 2015/01/28 12:26:23]

Should we also care about if the user uses the flag outside of KDE/Gnome?

[amo, 2015/01/28 12:38:20]

Done.

[dvadym, 2015/01/28 13:15:11]

After offline discussion we decided that it doen't give more information to find
out cases when on other environment flags are unsuccessful used.

+    OTHER_KWALLET,
+    OTHER_KEYRING,
+    OTHER_LIBSECRET,
+    MAX_BACKEND_USAGE_VALUE
+  };
+
+  enum LinuxBackendUsed { PLAINTEXT, GNOME_KEYRING, LIBSECRET, KWALLET };
+
+  static base::nix::DesktopEnvironment GetDesktopEnvironment();
+  static void RecordBackendStatistics(base::nix::DesktopEnvironment desktop_env,
+                                      const std::string& command_line_flag,
+                                      LinuxBackendUsed used_backend);
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(PasswordStoreFactory);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_FACTORY_H_