chromeos: Remove CryptohomeLibrary::TpmGetPassword and TpmIsReady

chrome/browser/chromeos/login/tpm_password_fetcher.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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_CHROMEOS_LOGIN_TPM_PASSWORD_FETCHER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_TPM_PASSWORD_FETCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
+#include "chromeos/dbus/dbus_method_call_status.h"
 
 namespace chromeos {
 
 // Interface which TpmPasswordFetcher uses to notify that password has been
 // fetched.
 class TpmPasswordFetcherDelegate {
  public:
   virtual ~TpmPasswordFetcherDelegate() {}
   virtual void OnPasswordFetched(const std::string& tpm_password) = 0;
 };
 
 // Class for fetching TPM password from the Cryptohome.
 class TpmPasswordFetcher {
  public:
   // Creates fetcher with the given delegate to be notified every time fetching
   // is done.
   explicit TpmPasswordFetcher(TpmPasswordFetcherDelegate* delegate);
   ~TpmPasswordFetcher();
 
   // Fetches TPM password and stores the result. Also notifies |delegate_| with
   // OnPasswordFetched() call.
   void Fetch();
 
  private:
+  // Used to implement Fetch().
+  void OnTpmIsReady(DBusMethodCallStatus call_status, bool tpm_is_ready);
+
+  // Used to implement Fetch().
+  void OnTpmGetPassword(DBusMethodCallStatus call_status,
+                        const std::string& password);
+
+  // Posts a task to call Fetch() later.
+  void RescheduleFetch();
+
   base::WeakPtrFactory<TpmPasswordFetcher> weak_factory_;
   TpmPasswordFetcherDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TpmPasswordFetcher);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_TPM_PASSWORD_FETCHER_H_