Add extra parameter to BrowserChildProcessCrashed to pass the exit_code at time of crash/termination

chrome/browser/metrics/chrome_stability_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/chrome_stability_metrics_provider.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 218 matching lines @@
       LogRendererHang();
       break;
 
     default:
       NOTREACHED();
       break;
   }
 }
 
 void ChromeStabilityMetricsProvider::BrowserChildProcessCrashed(
-    const content::ChildProcessData& data) {
+    const content::ChildProcessData& data,
+    int exit_code) {
 #if defined(ENABLE_PLUGINS)
   // Exclude plugin crashes from the count below because we report them via
   // a separate UMA metric.
   if (PluginMetricsProvider::IsPluginProcess(data.process_type))
     return;
 #endif
 
   IncrementPrefValue(prefs::kStabilityChildProcessCrashCount);
 }
 
@@ skipping 39 matching lines @@
                              was_extension_process ? 2 : 1);
   } else if (status == base::TERMINATION_STATUS_STILL_RUNNING) {
     UMA_HISTOGRAM_PERCENTAGE("BrowserRenderProcessHost.DisconnectedAlive",
                              was_extension_process ? 2 : 1);
   }
 }
 
 void ChromeStabilityMetricsProvider::LogRendererHang() {
   IncrementPrefValue(prefs::kStabilityRendererHangCount);
 }