Delay bookmarks load while the profile is loading.

chrome/browser/profiles/profile_manager.cc

Index: chrome/browser/profiles/profile_manager.cc
diff --git a/chrome/browser/profiles/profile_manager.cc b/chrome/browser/profiles/profile_manager.cc
index e157d1f75efa2be903f47e462f7c55133715ca0d..294741382b5dba2d34f5e0b229665bc9ee8879e7 100644
--- a/chrome/browser/profiles/profile_manager.cc
+++ b/chrome/browser/profiles/profile_manager.cc
@@ -8,6 +8,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/deferred_sequenced_task_runner.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/metrics/histogram.h"
@@ -25,6 +26,8 @@
 #include "chrome/browser/profiles/profile_destroyer.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_metrics.h"
+#include "chrome/browser/profiles/startup_task_runner_service.h"
+#include "chrome/browser/profiles/startup_task_runner_service_factory.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/ui/browser.h"
@@ -847,6 +850,9 @@ void ProfileManager::DoFinalInitForServices(Profile* profile,
   // initializing the managed flag if necessary).
   ManagedUserServiceFactory::GetForProfile(profile)->Init();
 #endif
+  // Start the deferred task runners once the profile is loaded.
+  StartupTaskRunnerServiceFactory::GetForProfile(profile)->
+      StartDeferredTaskRunners();
 }
 
 void ProfileManager::DoFinalInitLogging(Profile* profile) {