[cros] Initialize OOBE in parallel when boot animation is disabled.

ash/shell/shell_delegate_impl.cc

Index: ash/shell/shell_delegate_impl.cc
diff --git a/ash/shell/shell_delegate_impl.cc b/ash/shell/shell_delegate_impl.cc
index e6774c98d89c816826c18cffb4490623b9261969..f2379f4602ed7d4b3ec3d407970459f023ac694a 100644
--- a/ash/shell/shell_delegate_impl.cc
+++ b/ash/shell/shell_delegate_impl.cc
@@ -35,7 +35,7 @@ bool ShellDelegateImpl::IsUserLoggedIn() {
   return true;
 }
 
-bool ShellDelegateImpl::IsSessionStarted() {
+bool ShellDelegateImpl::IsSessionStarted() const {
   return true;
 }
 
@@ -54,6 +54,10 @@ bool ShellDelegateImpl::IsScreenLocked() const {
   return locked_;
 }
 
+bool ShellDelegateImpl::IsStatusAreaInitiallyVisible() const {
+  return true;
+}
+
 void ShellDelegateImpl::Shutdown() {
 }