Move constants in guest view from chrome to extensions.

chrome/browser/guest_view/guest_view_constants.h

Index: chrome/browser/guest_view/guest_view_constants.h
diff --git a/chrome/browser/guest_view/guest_view_constants.h b/chrome/browser/guest_view/guest_view_constants.h
deleted file mode 100644
index a32d0397a2b5f81f69bae56d3b51533bad988d13..0000000000000000000000000000000000000000
--- a/chrome/browser/guest_view/guest_view_constants.h
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2014 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.
-
-// Constants used for the WebView API.
-
-#ifndef CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_CONSTANTS_H_
-#define CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_CONSTANTS_H_
-
-namespace guestview {
-
-// Parameters/properties on events.
-extern const char kIsTopLevel[];
-extern const char kReason[];
-extern const char kUrl[];
-extern const char kUserGesture[];
-
-// Initialization parameters.
-extern const char kParameterApi[];
-extern const char kParameterInstanceId[];
-
-// Other.
-extern const char kGuestViewManagerKeyName[];
-extern const int kInstanceIDNone;
-
-}  // namespace guestview
-
-#endif  // CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_CONSTANTS_H_
-