Clear any open dialogs when the renderer process goes away.

chrome/browser/ui/browser_browsertest.cc

Index: chrome/browser/ui/browser_browsertest.cc
diff --git a/chrome/browser/ui/browser_browsertest.cc b/chrome/browser/ui/browser_browsertest.cc
index 6b834a19e33280e58261c936d98e24ad836d2962..04903b8086a2ed4134c3ff764ee060175dacd406 100644
--- a/chrome/browser/ui/browser_browsertest.cc
+++ b/chrome/browser/ui/browser_browsertest.cc
@@ -497,6 +497,38 @@ IN_PROC_BROWSER_TEST_F(BrowserTest, CrossProcessNavCancelsDialogs) {
   EXPECT_FALSE(contents->GetRenderProcessHost()->IgnoreInputEvents());
 }
 
+// Make sure that dialogs are closed after a renderer process dies, and that
+// subsequent navigations work.  See http://crbug/com/343265.
+IN_PROC_BROWSER_TEST_F(BrowserTest, SadTabCancelsDialogs) {
+  ASSERT_TRUE(test_server()->Start());
+  host_resolver()->AddRule("www.example.com", "127.0.0.1");
+  GURL beforeunload_url(test_server()->GetURL("files/beforeunload.html"));
+  ui_test_utils::NavigateToURL(browser(), beforeunload_url);
+
+  // Start a navigation to trigger the beforeunload dialog.
+  WebContents* contents = browser()->tab_strip_model()->GetActiveWebContents();
+  contents->GetRenderViewHost()->ExecuteJavascriptInWebFrame(
+      base::string16(),
+      ASCIIToUTF16("window.location.href = 'data:text/html,foo'"));
+  AppModalDialog* alert = ui_test_utils::WaitForAppModalDialog();
+  EXPECT_TRUE(alert->IsValid());
+  AppModalDialogQueue* dialog_queue = AppModalDialogQueue::GetInstance();
+  EXPECT_TRUE(dialog_queue->HasActiveDialog());
+
+  // Crash the renderer process and ensure the dialog is gone.
+  content::RenderProcessHost* child_process = contents->GetRenderProcessHost();
+  content::RenderProcessHostWatcher crash_observer(
+      child_process,
+      content::RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
+  base::KillProcess(child_process->GetHandle(), 0, false);
+  crash_observer.Wait();
+  EXPECT_FALSE(dialog_queue->HasActiveDialog());
+
+  // Make sure subsequent navigations work.
+  GURL url2("http://www.example.com/files/empty.html");
+  ui_test_utils::NavigateToURL(browser(), url2);
+}
+
 // Test for crbug.com/22004.  Reloading a page with a before unload handler and
 // then canceling the dialog should not leave the throbber spinning.
 IN_PROC_BROWSER_TEST_F(BrowserTest, ReloadThenCancelBeforeUnload) {