cros: Flush profile files at critical moments

chrome/browser/chromeos/profiles/profile_helper.h

Index: chrome/browser/chromeos/profiles/profile_helper.h
diff --git a/chrome/browser/chromeos/profiles/profile_helper.h b/chrome/browser/chromeos/profiles/profile_helper.h
index c0f8d349c3103d304804cae47fee7d16c4c49586..20fecf9f5dc59c45ef2781b44a4e6ddd396f0541 100644
--- a/chrome/browser/chromeos/profiles/profile_helper.h
+++ b/chrome/browser/chromeos/profiles/profile_helper.h
@@ -11,6 +11,7 @@
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
 #include "chrome/browser/chromeos/login/signin/oauth2_login_manager.h"
@@ -34,6 +35,8 @@ class MultiUserWindowManagerChromeOSTest;
 
 namespace chromeos {
 
+class FileFlusher;
+
 // This helper class is used on Chrome OS to keep track of currently
 // active user profile.
 // Whenever active user is changed (either add another user into session or
@@ -84,12 +87,15 @@ class ProfileHelper
   static bool IsSigninProfile(const Profile* profile);
 
   // Returns true when |profile| corresponds to owner's profile.
-  static bool IsOwnerProfile(Profile* profile);
+  static bool IsOwnerProfile(const Profile* profile);
 
   // Returns true when |profile| corresponds to the primary user profile
   // of the current session.
   static bool IsPrimaryProfile(const Profile* profile);
 
+  // Returns true when |profile| is for an ephemeral user.
+  static bool IsEphemeralUserProfile(const Profile* profile);
+
   // Initialize a bunch of services that are tied to a browser profile.
   // TODO(dzhioev): Investigate whether or not this method is needed.
   void ProfileStartup(Profile* profile, bool process_startup);
@@ -129,6 +135,9 @@ class ProfileHelper
   static std::string GetUserIdHashByUserIdForTesting(
       const std::string& user_id);
 
+  // Flushes all files of |profile|.
+  void FlushProfile(Profile* profile);
+
  private:
   // TODO(nkostylev): Create a test API class that will be the only one allowed
   // to access private test methods.
@@ -206,6 +215,8 @@ class ProfileHelper
   // always be returned by GetUserByProfile().
   static bool always_return_primary_user_for_testing;
 
+  scoped_ptr<FileFlusher> profile_flusher_;
+
   base::WeakPtrFactory<ProfileHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileHelper);