Chrome OS should open to empty desktop when session restore is empty.

chrome/browser/ui/startup/startup_browser_creator_browsertest.cc

Index: chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
diff --git a/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc b/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
index 27c162af1dd3749a1483baa2a55a63d387bc78f4..3ea9c1abfadb7f0f64f423648fd6d4b6f730ed93 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator_browsertest.cc
@@ -51,6 +51,10 @@ class StartupBrowserCreatorTest : public ExtensionBrowserTest {
     command_line->AppendSwitch(switches::kEnablePanels);
     command_line->AppendSwitchASCII(switches::kHomePage,
                                     chrome::kAboutBlankURL);
+#if defined(OS_CHROMEOS)
+    // TODO(nkostylev): Investigate if we can remove this switch.
+    command_line->AppendSwitch(switches::kCreateBrowserOnStartupForTests);
+#endif
   }
 
   // Helper functions return void so that we can ASSERT*().