Revert of PlzNavigate: Enforce 'frame-src' CSP on the browser.

content/common/content_security_policy/csp_disposition_enum.h

Index: content/common/content_security_policy/csp_disposition_enum.h
diff --git a/content/common/content_security_policy/csp_disposition_enum.h b/content/common/content_security_policy/csp_disposition_enum.h
deleted file mode 100644
index 8faf3d9863c169f1e8481e2957c87a1653562a8c..0000000000000000000000000000000000000000
--- a/content/common/content_security_policy/csp_disposition_enum.h
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2017 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 CONTENT_COMMON_CONTENT_SECURITY_POLICY_CSP_DISPOSITION_ENUM_
-#define CONTENT_COMMON_CONTENT_SECURITY_POLICY_CSP_DISPOSITION_ENUM_
-
-namespace content {
-
-// Whether or not the Content Security Policy should be enforced.
-enum class CSPDisposition {
-  DO_NOT_CHECK,
-  CHECK,
-
-  LAST = CHECK
-};
-
-}  // namespace content
-#endif  // CONTENT_COMMON_CONTENT_SECURITY_POLICY_CSP_DISPOSITION_ENUM_