Moving preference API into api/preferences

chrome/browser/extensions/extension_preference_api_constants.h

Index: chrome/browser/extensions/extension_preference_api_constants.h
diff --git a/chrome/browser/extensions/extension_preference_api_constants.h b/chrome/browser/extensions/extension_preference_api_constants.h
deleted file mode 100644
index f77cdd33294f2bd61794a425232ce1ad3fb81f2c..0000000000000000000000000000000000000000
--- a/chrome/browser/extensions/extension_preference_api_constants.h
+++ /dev/null
@@ -1,26 +0,0 @@
-// 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_EXTENSIONS_EXTENSION_PREFERENCE_API_CONSTANTS_H__
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_API_CONSTANTS_H__
-
-namespace extension_preference_api_constants {
-
-// Keys for incoming arguments.
-extern const char kIncognitoKey[];
-extern const char kScopeKey[];
-
-// Keys for returned parameters.
-extern const char kIncognitoSpecific[];
-extern const char kLevelOfControl[];
-extern const char kValue[];
-
-// Errors.
-extern const char kIncognitoErrorMessage[];
-extern const char kIncognitoSessionOnlyErrorMessage[];
-extern const char kPermissionErrorMessage[];
-
-}
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_API_CONSTANTS_H__