Remove ChildProcess.HangRendererType.

content/public/browser/renderer_unresponsive_type.h

Index: content/public/browser/renderer_unresponsive_type.h
diff --git a/content/public/browser/renderer_unresponsive_type.h b/content/public/browser/renderer_unresponsive_type.h
deleted file mode 100644
index e2190f7dfe0b8a2555984ef4eb90a52a72f4b08f..0000000000000000000000000000000000000000
--- a/content/public/browser/renderer_unresponsive_type.h
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright (c) 2016 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_PUBLIC_BROWSER_RENDERER_UNRESPONSIVE_TYPE_H_
-#define CONTENT_PUBLIC_BROWSER_RENDERER_UNRESPONSIVE_TYPE_H_
-
-#include "content/common/content_export.h"
-
-namespace content {
-
-// Used in histograms to differentiate between the different types of
-// renderer hang. Only add values at the end, do not delete values.
-enum RendererUnresponsiveType {
-  RENDERER_UNRESPONSIVE_UNKNOWN = 0,
-  RENDERER_UNRESPONSIVE_IN_FLIGHT_EVENTS = 1,
-  RENDERER_UNRESPONSIVE_DIALOG_CLOSED = 2,
-  RENDERER_UNRESPONSIVE_DIALOG_SUPPRESSED = 3,
-  RENDERER_UNRESPONSIVE_BEFORE_UNLOAD = 4,
-
-  // Used when a page hangs after a JavaScript dialog is fired inside of unload.
-  // This is no longer allowed to happen so this value is no longer used.
-  RENDERER_UNRESPONSIVE_UNLOAD_OBSOLETE = 5,
-  RENDERER_UNRESPONSIVE_CLOSE_PAGE = 6,
-  RENDERER_UNRESPONSIVE_MAX = RENDERER_UNRESPONSIVE_CLOSE_PAGE,
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_RENDERER_UNRESPONSIVE_TYPE_H_