Determine whether user is ephemeral when coming back from a crash

chrome/browser/chromeos/cros/cryptohome_library.h

Index: chrome/browser/chromeos/cros/cryptohome_library.h
diff --git a/chrome/browser/chromeos/cros/cryptohome_library.h b/chrome/browser/chromeos/cros/cryptohome_library.h
index 3f684b298d66da3771b0c7ef82812e281ad321d1..6cc56bbb4e27fd8438de0674bb2e3b5c081b5d38 100644
--- a/chrome/browser/chromeos/cros/cryptohome_library.h
+++ b/chrome/browser/chromeos/cros/cryptohome_library.h
@@ -20,6 +20,12 @@ class CryptohomeLibrary {
   // Asks cryptohomed if a drive is currently mounted.
   virtual bool IsMounted() = 0;
 
+  // Asks cryptohomed whether a cryptohome is currently mounted for the given
+  // user and if so, whether the mount is ephemeral.
+  virtual bool IsMountedForUser(const std::string& username,
+                                bool* is_mounted,
+                                bool* is_ephemeral_mount) = 0;
+
   // Wrappers of the functions for working with Tpm.
 
   // Returns whether Tpm is ready.