Add debugging info for crbug.com/99242 crashes.

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index 238a1a27271cda7943b857aaa5a6cce40585911b..ab36e3bb0a50dbe23084c8e3fda8e7f0ecd2b271 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc
@@ -452,6 +452,12 @@ void RenderMessageFilter::OnGetCookies(const GURL& url,
     return;
   }
 
+  // If we crash here, figure out what URL the renderer was requesting.
+  // http://crbug.com/99242
+  char url_buf[128];
+  base::strlcpy(url_buf, url.spec().c_str(), arraysize(url_buf));
+  base::debug::Alias(url_buf);
+
   net::URLRequestContext* context = GetRequestContextForURL(url);
   net::CookieMonster* cookie_monster =
       context->cookie_store()->GetCookieMonster();