Add a bunch of missing bug references to FLAKY tests

chrome/browser/appcache/appcache_ui_test.cc

 // Copyright (c) 2010 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/file_path.h"
 #include "chrome/test/ui/ui_layout_test.h"
 
 class AppCacheUITest : public UILayoutTest {
  protected:
   virtual ~AppCacheUITest() {}
 };
 
+// Flaky: http://crbug.com/54717
 TEST_F(AppCacheUITest, FLAKY_AppCacheLayoutTests) {
   static const char* kLayoutTestFiles[] = {
       "404-manifest.html",
       "404-resource.html",
       "auth.html",
       "cyrillic-uri.html",
       "deferred-events-delete-while-raising.html",
       "deferred-events.html",
       "destroyed-frame.html",
       "detached-iframe.html",
@@ skipping 44 matching lines @@
 
   FilePath appcache_test_dir;
   appcache_test_dir = appcache_test_dir.AppendASCII("appcache");
   InitializeForLayoutTest(http_test_dir, appcache_test_dir, kHttpPort);
 
   StartHttpServer(new_http_root_dir_);
   for (size_t i = 0; i < arraysize(kLayoutTestFiles); ++i)
     RunLayoutTest(kLayoutTestFiles[i], kHttpPort);
   StopHttpServer();
 }