Remove ChromeBrowserProvider::IsOffTheRecordSessionActive().

ios/chrome/browser/ui/browser_otr_state.h

Index: ios/chrome/browser/ui/browser_otr_state.h
diff --git a/ios/chrome/browser/ui/browser_otr_state.h b/ios/chrome/browser/ui/browser_otr_state.h
deleted file mode 100644
index 7a53f0fb9a9290aea974c6c5aa7b5a2f1afe617a..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/ui/browser_otr_state.h
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2015 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 IOS_CHROME_BROWSER_UI_BROWSER_OTR_STATE_H_
-#define IOS_CHROME_BROWSER_UI_BROWSER_OTR_STATE_H_
-
-// Returns whether there is any Off-The-Record session in progress.
-bool IsOffTheRecordSessionActive();
-
-#endif  // IOS_CHROME_BROWSER_UI_BROWSER_OTR_STATE_H_