Revert "Revert 266297 "1. Handle the case of empty embedder_extension_id...""

chrome/browser/guestview/guestview_constants.h

Index: chrome/browser/guestview/guestview_constants.h
diff --git a/chrome/browser/guestview/guestview_constants.h b/chrome/browser/guestview/guestview_constants.h
deleted file mode 100644
index 7f1e03e4df973cf8d74a1527f5cf85daa79dc5f5..0000000000000000000000000000000000000000
--- a/chrome/browser/guestview/guestview_constants.h
+++ /dev/null
@@ -1,28 +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.
-
-// Constants used for the WebView API.
-
-#ifndef CHROME_BROWSER_GUESTVIEW_GUESTVIEW_CONSTANTS_H_
-#define CHROME_BROWSER_GUESTVIEW_GUESTVIEW_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 int kInstanceIDNone;
-
-}  // namespace guestview
-
-#endif  // CHROME_BROWSER_GUESTVIEW_GUESTVIEW_CONSTANTS_H_
-