Delay updating jumplist to avoid blocking the file thread at start-up

chrome/browser/ui/views/frame/browser_view.cc

Index: chrome/browser/ui/views/frame/browser_view.cc
diff --git a/chrome/browser/ui/views/frame/browser_view.cc b/chrome/browser/ui/views/frame/browser_view.cc
index d790098fc06d42ab6f0c6df787712da080486e91..f2238f57b4a082c07e6951174b108552da39dfd4 100644
--- a/chrome/browser/ui/views/frame/browser_view.cc
+++ b/chrome/browser/ui/views/frame/browser_view.cc
@@ -2236,8 +2236,7 @@ void BrowserView::Init() {
   // Create a custom JumpList and add it to an observer of TabRestoreService
   // so we can update the custom JumpList when a tab is added or removed.
   if (JumpList::Enabled()) {
-    jumplist_ = new JumpList();
-    jumplist_->AddObserver(browser_->profile());
+    load_complete_listener_.reset(new LoadCompleteListener(this));
   }
 #endif
 
@@ -2270,6 +2269,14 @@ void BrowserView::LoadingAnimationCallback() {
   }
 }
 
+void BrowserView::OnLoadCompleted() {
+#if defined(OS_WIN) && !defined(USE_AURA)
+  DCHECK(!jumplist_);
+  jumplist_ = new JumpList();
+  jumplist_->AddObserver(browser_->profile());
+#endif
+}
+
 // BrowserView, private --------------------------------------------------------
 
 BrowserViewLayout* BrowserView::GetBrowserViewLayout() const {