Move SigninManagerDelegate into the Signin component.

chrome/browser/signin/signin_manager_delegate.h

Index: chrome/browser/signin/signin_manager_delegate.h
diff --git a/chrome/browser/signin/signin_manager_delegate.h b/chrome/browser/signin/signin_manager_delegate.h
deleted file mode 100644
index 9a70c18d3b7eaebed981167a64a3e05a2cbb25a2..0000000000000000000000000000000000000000
--- a/chrome/browser/signin/signin_manager_delegate.h
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2013 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_SIGNIN_SIGNIN_MANAGER_DELEGATE_H_
-#define CHROME_BROWSER_SIGNIN_SIGNIN_MANAGER_DELEGATE_H_
-
-// A delegate interface that needs to be supplied to SigninManager by
-// the embedder.
-class SigninManagerDelegate {
- public:
-  virtual ~SigninManagerDelegate() {}
-
-  // Returns true if the cookie policy for the execution context of
-  // the SigninManager allows cookies for the Google signin domain.
-  virtual bool AreSigninCookiesAllowed() = 0;
-};
-
-#endif  // CHROME_BROWSER_SIGNIN_SIGNIN_MANAGER_DELEGATE_H_