Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/browser/sync/test/integration/bookmarks_helper.cc

 // Copyright (c) 2012 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 "chrome/browser/sync/test/integration/bookmarks_helper.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
 #include <stack>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/path_service.h"
 #include "base/rand_util.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/task/cancelable_task_tracker.h"
+#include "base/threading/thread_restrictions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/managed_bookmark_service_factory.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/sync/test/integration/profile_sync_service_harness.h"
 #include "chrome/browser/sync/test/integration/sync_datatype_helper.h"
 #include "chrome/browser/sync/test/integration/sync_test.h"
 #include "chrome/common/chrome_paths.h"
@@ skipping 808 matching lines @@
     int pixel_height = dip_height * scale;
     SkBitmap bmp;
     bmp.allocN32Pixels(pixel_width, pixel_height);
     bmp.eraseColor(color);
     favicon.AddRepresentation(gfx::ImageSkiaRep(bmp, scale));
   }
   return gfx::Image(favicon);
 }
 
 gfx::Image Create1xFaviconFromPNGFile(const std::string& path) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   const char* kPNGExtension = ".png";
   if (!base::EndsWith(path, kPNGExtension,
                       base::CompareCase::INSENSITIVE_ASCII))
     return gfx::Image();
 
   base::FilePath full_path;
   if (!PathService::Get(chrome::DIR_TEST_DATA, &full_path))
     return gfx::Image();
 
   full_path = full_path.AppendASCII("sync").AppendASCII(path);
@@ skipping 88 matching lines @@
 }  // namespace
 
 BookmarksUrlChecker::BookmarksUrlChecker(int profile,
                                          const GURL& url,
                                          int expected_count)
     : AwaitMatchStatusChangeChecker(base::Bind(BookmarkCountsByUrlMatch,
                                                profile,
                                                base::ConstRef(url),
                                                expected_count),
                                     "Bookmark URL counts match.") {}