Treat PPAPI disconnect as a crash for plugin metrics.

chrome/browser/metrics/plugin_metrics_provider.cc

 // Copyright 2014 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 "chrome/browser/metrics/plugin_metrics_provider.h"
 
 #include <string>
 
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
@@ skipping 348 matching lines @@
   GetChildProcessStats(data).process_crashes++;
   RecordCurrentStateWithDelay(kRecordStateDelayMs);
 }
 
 void PluginMetricsProvider::BrowserChildProcessInstanceCreated(
     const content::ChildProcessData& data) {
   GetChildProcessStats(data).instances++;
   RecordCurrentStateWithDelay(kRecordStateDelayMs);
 }
 
+void PluginMetricsProvider::BrowserChildProcessHostDisconnected(
+      const content::ChildProcessData& data) {
+  // Treat a disconnect as a crash.
+  GetChildProcessStats(data).process_crashes++;
+  RecordCurrentStateWithDelay(kRecordStateDelayMs);
+}
+
 bool PluginMetricsProvider::RecordCurrentStateWithDelay(int delay_sec) {
   if (weak_ptr_factory_.HasWeakPtrs())
     return false;
 
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&PluginMetricsProvider::RecordCurrentState,
                 weak_ptr_factory_.GetWeakPtr()),
                 base::TimeDelta::FromMilliseconds(delay_sec));
   return true;
 }
 
 bool PluginMetricsProvider::RecordCurrentStateIfPending() {
   if (!weak_ptr_factory_.HasWeakPtrs())
     return false;
 
   weak_ptr_factory_.InvalidateWeakPtrs();
   RecordCurrentState();
   return true;
 }