Remove ChildProcess.HangRendererType.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 6490d064d2b838e66a4a204a09f894267f6d9b47..17fb67c2896ec00f2e9b651ba9153185c7aec6e8 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -38,7 +38,6 @@
 #include "content/common/image_downloader/image_downloader.mojom.h"
 #include "content/common/navigation_params.h"
 #include "content/public/browser/render_frame_host.h"
-#include "content/public/browser/renderer_unresponsive_type.h"
 #include "content/public/common/javascript_dialog_type.h"
 #include "content/public/common/previews_state.h"
 #include "media/mojo/interfaces/interface_factory.mojom.h"
@@ -991,9 +990,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // to OnBeforeUnloadACK(), or until the timeout triggers.
   std::unique_ptr<TimeoutMonitor> beforeunload_timeout_;
 
-  // If beforeunload_timeout_ is active, the type of the timeout.
-  RendererUnresponsiveType beforeunload_timeout_type_;
-
   // Indicates whether this RenderFrameHost is in the process of loading a
   // document or not.
   bool is_loading_;