Fixes crash if instant is enabled and you block JS.

chrome/browser/instant/instant_browsertest.cc

 // Copyright (c) 2011 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/command_line.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 #include "chrome/browser/autocomplete/autocomplete_edit_view.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_window.h"
+#include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/instant/instant_loader.h"
 #include "chrome/browser/instant/instant_loader_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_model.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/url_constants.h"
@@ skipping 696 matching lines @@
 
   SetSuggestionsJavascriptArgument(
       preview_,
       "{suggestions:[{value:'defghij'}],complete_behavior:'delayed'}");
   ASSERT_NO_FATAL_FAILURE(SetLocationBarText("def"));
   EXPECT_STR_EQ("defghij", GetSuggestion());
   AutocompleteEditModel* edit_model = location_bar_->location_entry()->model();
   EXPECT_EQ(INSTANT_COMPLETE_DELAYED, edit_model->instant_complete_behavior());
   ASSERT_EQ(ASCIIToUTF16("def"), location_bar_->location_entry()->GetText());
 }
+
+// Make sure the renderer doesn't crash if javascript is blocked.
+IN_PROC_BROWSER_TEST_F(InstantTest, DontCrashOnBlockedJS) {
+  browser()->profile()->GetHostContentSettingsMap()->SetDefaultContentSetting(
+      CONTENT_SETTINGS_TYPE_JAVASCRIPT, CONTENT_SETTING_BLOCK);
+  ASSERT_TRUE(test_server()->Start());
+  EnableInstant();
+  ASSERT_NO_FATAL_FAILURE(SetupInstantProvider("search.html"));
+  ASSERT_NO_FATAL_FAILURE(SetupLocationBar());
+  // Wait for notification that the instant API has been determined.
+  ui_test_utils::WaitForNotification(
+      NotificationType::INSTANT_SUPPORT_DETERMINED);
+  // As long as we get the notification we're good (the renderer didn't crash).
+}