MD Downloads: reset list tracker when renderer crashes

chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.cc

Index: chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.cc
diff --git a/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.cc b/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.cc
index c980c14d4b6d0c146c20345aa2913a74468e5bd6..d13026ad06dc947c9ed316efc79840b1deb0acf6 100644
--- a/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.cc
+++ b/chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.cc
@@ -131,6 +131,8 @@ void MdDownloadsDOMHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback("openDownloadsFolder",
       base::Bind(&MdDownloadsDOMHandler::HandleOpenDownloadsFolder,
                  weak_ptr_factory_.GetWeakPtr()));
+
+  Observe(GetWebUIWebContents());
 }
 
 void MdDownloadsDOMHandler::OnJavascriptDisallowed() {
@@ -139,6 +141,12 @@ void MdDownloadsDOMHandler::OnJavascriptDisallowed() {
   CheckForRemovedFiles();
 }
 
+void MdDownloadsDOMHandler::RenderProcessGone(base::TerminationStatus status) {
+  // TODO(dbeam): WebUI + WebUIMessageHandler should do this automatically.
+  // http://crbug.com/610450
+  DisallowJavascript();
+}
+
 void MdDownloadsDOMHandler::HandleGetDownloads(const base::ListValue* args) {
   AllowJavascript();