Add an histogram to differentiate between hang types of the renderer

content/browser/frame_host/render_frame_host_manager_unittest.cc

 // Copyright 2013 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.
 
 #include "content/browser/frame_host/render_frame_host_manager.h"
 
 #include <stdint.h>
 
 #include <tuple>
 #include <utility>
@@ skipping 1717 matching lines @@
   EXPECT_TRUE(rfh1->render_view_host()->is_waiting_for_close_ack());
 
   // Start a navigation to a new site.
   controller().LoadURL(
       kUrl2, Referrer(), ui::PAGE_TRANSITION_LINK, std::string());
   if (IsBrowserSideNavigationEnabled())
     rfh1->PrepareForCommit();
   EXPECT_TRUE(contents()->CrossProcessNavigationPending());
 
   // Simulate the unresponsiveness timer.  The tab should close.
-  contents()->RendererUnresponsive(rfh1->render_view_host()->GetWidget());
+  contents()->RendererUnresponsive(
+      rfh1->render_view_host()->GetWidget(),
+      RenderWidgetHostDelegate::RENDERER_UNRESPONSIVE_CLOSE_PAGE);
   EXPECT_TRUE(close_delegate.is_closed());
 }
 
 // Tests that the RenderFrameHost is properly deleted when the SwapOutACK is
 // received.  (SwapOut and the corresponding ACK always occur after commit.)
 // Also tests that an early SwapOutACK is properly ignored.
 TEST_F(RenderFrameHostManagerTest, DeleteFrameAfterSwapOutACK) {
   const GURL kUrl1("http://www.google.com/");
   const GURL kUrl2("http://www.chromium.org/");
 
@@ skipping 1342 matching lines @@
   child_host->SendNavigateWithParams(&commit_params);
   EXPECT_NO_FATAL_FAILURE(CheckInsecureRequestPolicyIPC(
       main_test_rfh(), blink::kLeaveInsecureRequestsAlone,
       proxy_to_parent->GetRoutingID()));
   EXPECT_EQ(
       blink::kLeaveInsecureRequestsAlone,
       root->child_at(0)->current_replication_state().insecure_request_policy);
 }
 
 }  // namespace content