Add a chrome://interstitials page.

chrome/browser/ui/webui/interstitials/interstitial_ui_browsertest.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 "base/strings/utf_string_conversions.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/devtools/devtools_window.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/browser/devtools_manager.h"
+#include "content/public/browser/web_contents.h"
+
+class InterstitialUITest : public InProcessBrowserTest {
+ public:
+   InterstitialUITest() {}
+   virtual ~InterstitialUITest() {}
+
+ protected:
+  void TestInterstitial(GURL url, const std::string& page_title) {
+    ui_test_utils::NavigateToURL(browser(), url);
+    EXPECT_EQ(
+      base::ASCIIToUTF16(page_title),
+      browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
+
+    // Should also be able to open and close devtools.
+    content::RenderViewHost* rvh =
+        browser()->tab_strip_model()->GetWebContentsAt(0)->GetRenderViewHost();
+    DevToolsWindow* window = DevToolsWindow::OpenDevToolsWindowForTest(rvh,
+                                                                       true);
+    ui_test_utils::WaitUntilDevToolsWindowLoaded(window);
+    // Try closing the devtools.
+    content::WindowedNotificationObserver close_observer(
+        content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
+        content::Source<content::WebContents>(
+            window->web_contents_for_test()));
+    DevToolsWindow::ToggleDevToolsWindow(
+        browser(),
+        DevToolsToggleAction::Toggle());
+    close_observer.Wait();
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(InterstitialUITest, OpenInterstitial) {
+  TestInterstitial(GURL("chrome://interstitials"), "Interstitials");
+  TestInterstitial(GURL("chrome://interstitials/--invalid--"), "Interstitials");
+  TestInterstitial(GURL("chrome://interstitials/ssl"), "Privacy error");
+  TestInterstitial(GURL("chrome://interstitials/safebrowsing?type=malware"),
+                   "Security error");
+  TestInterstitial(GURL("chrome://interstitials/safebrowsing?type=phishing"),
+                   "Security error");
+}