Delay bookmarks load while the profile is loading.

chrome/test/base/testing_profile.h

Index: chrome/test/base/testing_profile.h
diff --git a/chrome/test/base/testing_profile.h b/chrome/test/base/testing_profile.h
index 148b4688ad544e95176a8f1d6e2a77da24500f16..01c3ce4701d5c5799a8a0c334777bf6b780f63c4 100644
--- a/chrome/test/base/testing_profile.h
+++ b/chrome/test/base/testing_profile.h
@@ -173,6 +173,8 @@ class TestingProfile : public Profile {
   // content::BrowserContext
   virtual base::FilePath GetPath() OVERRIDE;
   virtual scoped_refptr<base::SequencedTaskRunner> GetIOTaskRunner() OVERRIDE;
+  virtual scoped_refptr<base::DeferredSequencedTaskRunner>
+      GetBookmarksTaskRunner() OVERRIDE;
   virtual bool IsOffTheRecord() const OVERRIDE;
   virtual content::DownloadManagerDelegate*
       GetDownloadManagerDelegate() OVERRIDE;
@@ -330,6 +332,8 @@ class TestingProfile : public Profile {
 
   scoped_refptr<HostContentSettingsMap> host_content_settings_map_;
 
+  scoped_refptr<base::DeferredSequencedTaskRunner> bookmarks_task_runner_;
+
   base::FilePath last_selected_directory_;
   scoped_refptr<history::TopSites> top_sites_;  // For history and thumbnails.