Ensure correctness for interleaved IndexedDB cursor iteration.

content/shell/browser/layout_test/layout_test_content_browser_client.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 "content/shell/browser/layout_test/layout_test_content_browser_client.h"
 
 #include "base/memory/ptr_util.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 114 matching lines @@
 BrowserMainParts* LayoutTestContentBrowserClient::CreateBrowserMainParts(
     const MainFunctionParams& parameters) {
   set_browser_main_parts(new LayoutTestBrowserMainParts(parameters));
   return shell_browser_main_parts();
 }
 
 void LayoutTestContentBrowserClient::GetQuotaSettings(
     BrowserContext* context,
     StoragePartition* partition,
     const storage::OptionalQuotaSettingsCallback& callback) {
-  callback.Run(storage::GetHardCodedSettings(5 * 1024 * 1024));
+  // The 1GB limit is intended to give a large headroom to tests that need to
+  // build up a large data set and issue many concurrent reads or writes.
+  callback.Run(storage::GetHardCodedSettings(1024 * 1024 * 1024));
 }
 
 PlatformNotificationService*
 LayoutTestContentBrowserClient::GetPlatformNotificationService() {
   return layout_test_notification_manager_.get();
 }
 
 }  // namespace content