Fix for crash in PeerConnectionTrackerHost.

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 3c7548935305386e698276f855914210ecb6b46f..01fcdd5565c1ad9e9dfbce2988853f9f382f65c5 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -441,10 +441,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // RenderFrames.
   bool is_for_guests_only_;
 
-  // Forwards messages between WebRTCInternals in the browser process
-  // and PeerConnectionTracker in the renderer process.
-  scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
-
   // Prevents the class from being added as a GpuDataManagerImpl observer more
   // than once.
   bool gpu_observer_registered_;
@@ -479,6 +475,12 @@ class CONTENT_EXPORT RenderProcessHostImpl
   WebRTCEventLogHost webrtc_eventlog_host_;
 #endif
 
+  // Forwards messages between WebRTCInternals in the browser process
+  // and PeerConnectionTracker in the renderer process.
+  // It holds a raw pointer to webrtc_eventlog_host_, and therefore should be
+  // defined below it so it is destructed first.
+  scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
+
   int worker_ref_count_;
 
   // Records the time when the process starts surviving for workers for UMA.