Remove ChildProcess.HangRendererType.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index cf3ec7219b0dcd06f6097d436c1162ab67d5c426..0d243e9c85939da35c9ac76d1df8442adf0d029a 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4838,8 +4838,7 @@ void WebContentsImpl::OnIgnoredUIEvent() {
 }
 
 void WebContentsImpl::RendererUnresponsive(
-    RenderWidgetHostImpl* render_widget_host,
-    RendererUnresponsiveType type) {
+    RenderWidgetHostImpl* render_widget_host) {
   for (auto& observer : observers_)
     observer.OnRendererUnresponsive(render_widget_host);
 
@@ -4850,11 +4849,6 @@ void WebContentsImpl::RendererUnresponsive(
   if (ShouldIgnoreUnresponsiveRenderer())
     return;
 
-  // Record histograms about the type of renderer hang.
-  UMA_HISTOGRAM_ENUMERATION(
-      "ChildProcess.HangRendererType", type,
-      RendererUnresponsiveType::RENDERER_UNRESPONSIVE_MAX);
-
   RenderFrameHostImpl* rfhi =
       static_cast<RenderFrameHostImpl*>(GetRenderViewHost()->GetMainFrame());
   if (rfhi->is_waiting_for_beforeunload_ack()) {
@@ -4870,7 +4864,6 @@ void WebContentsImpl::RendererUnresponsive(
 
   if (delegate_) {
     WebContentsUnresponsiveState unresponsive_state;
-    unresponsive_state.reason = type;
     unresponsive_state.outstanding_ack_count =
         render_widget_host->in_flight_event_count();
     unresponsive_state.outstanding_event_type =