Adds browser preferences to configure first-run flow on Windows 8.

chrome/browser/ui/startup/startup_browser_creator_impl.cc

Index: chrome/browser/ui/startup/startup_browser_creator_impl.cc
diff --git a/chrome/browser/ui/startup/startup_browser_creator_impl.cc b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
index ca0e97f30fbaaa825636fa2f1402f35c8b84857b..98f5412a847a88e9575628db4de7bf918d648131 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_impl.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
@@ -362,8 +362,12 @@ bool StartupBrowserCreatorImpl::Launch(Profile* profile,
     if (process_startup) {
       if (browser_defaults::kOSSupportsOtherBrowsers &&
           !command_line_.HasSwitch(switches::kNoDefaultBrowserCheck)) {
-        if (!chrome::ShowAutolaunchPrompt(profile))
-          chrome::ShowDefaultBrowserPrompt(profile);
+        if (!chrome::ShowAutolaunchPrompt(profile)) {
+          bool permit_prompt_on_first_run = browser_creator_ &&
+              browser_creator_->get_suppressed_set_as_default_dialog();
+          chrome::ShowDefaultBrowserPrompt(profile,
+                                           permit_prompt_on_first_run);
+        }
       }
 #if defined(OS_MACOSX)
       // Check whether the auto-update system needs to be promoted from user