Remove ChildProcess.HangRendererType.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index f43db083dedbfd5c9c1dc9fb3f09d05cbc5e5c0a..91cf8994d4116fc2013ecfd0102fa21358a2d261 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -2548,8 +2548,6 @@ void RenderFrameHostImpl::DispatchBeforeUnload(bool for_navigation,
       // reply from the dialog.
       SimulateBeforeUnloadAck();
     } else {
-      beforeunload_timeout_type_ =
-          RendererUnresponsiveType::RENDERER_UNRESPONSIVE_BEFORE_UNLOAD;
       beforeunload_timeout_->Start(
           TimeDelta::FromMilliseconds(RenderViewHostImpl::kUnloadTimeoutMS));
       send_before_unload_start_time_ = base::TimeTicks::Now();
@@ -2631,17 +2629,8 @@ void RenderFrameHostImpl::JavaScriptDialogClosed(
       // presumably malicious, so there's no point in continuing to run its
       // script and dragging out the process.
       if (dialog_was_suppressed) {
-        UMA_HISTOGRAM_ENUMERATION(
-            "ChildProcess.HangRendererType",
-            RendererUnresponsiveType::RENDERER_UNRESPONSIVE_DIALOG_SUPPRESSED,
-            RendererUnresponsiveType::RENDERER_UNRESPONSIVE_MAX);
-
         frame->SimulateBeforeUnloadAck();
       } else {
-        frame->beforeunload_timeout_type_ =
-            success
-                ? RendererUnresponsiveType::RENDERER_UNRESPONSIVE_BEFORE_UNLOAD
-                : RendererUnresponsiveType::RENDERER_UNRESPONSIVE_DIALOG_CLOSED;
         frame->beforeunload_timeout_->Start(
             TimeDelta::FromMilliseconds(RenderViewHostImpl::kUnloadTimeoutMS));
       }
@@ -3476,10 +3465,6 @@ void RenderFrameHostImpl::BeforeUnloadTimeout() {
   if (render_view_host_->GetDelegate()->ShouldIgnoreUnresponsiveRenderer())
     return;
 
-  UMA_HISTOGRAM_ENUMERATION(
-      "ChildProcess.HangRendererType", beforeunload_timeout_type_,
-      RendererUnresponsiveType::RENDERER_UNRESPONSIVE_MAX);
-
   SimulateBeforeUnloadAck();
 }