Remove chromeos::CryptohomeLibrary::IsMounted and convert

chromeos/dbus/cryptohome_client.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 CHROMEOS_DBUS_CRYPTOHOME_CLIENT_H_
 #define CHROMEOS_DBUS_CRYPTOHOME_CLIENT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 42 matching lines @@
   // |handler| is called when results for AsyncXXX methods are returned.
   // Cryptohome service will process the calls in a first-in-first-out manner
   // when they are made in parallel.
   virtual void SetAsyncCallStatusHandler(
       const AsyncCallStatusHandler& handler) = 0;
 
   // Resets AsyncCallStatus signal handler.
   virtual void ResetAsyncCallStatusHandler() = 0;
 
   // Calls IsMounted method and returns true when the call succeeds.
-  // This method blocks until the call returns.
-  virtual bool IsMounted(bool* is_mounted) = 0;
+  virtual void IsMounted(const BoolMethodCallback& callback) = 0;
 
   // Calls Unmount method and returns true when the call succeeds.
   // This method blocks until the call returns.
   virtual bool Unmount(bool* success) = 0;
 
   // Calls AsyncCheckKey method.  |callback| is called after the method call
   // succeeds.
   virtual void AsyncCheckKey(const std::string& username,
                              const std::string& key,
                              const AsyncMethodCallback& callback) = 0;
@@ skipping 95 matching lines @@
   // Create() should be used instead.
   CryptohomeClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CryptohomeClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_CRYPTOHOME_CLIENT_H_