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..5c18480453eea743676803b42a11725703969707 100644
--- a/chrome/browser/ui/startup/startup_browser_creator_impl.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator_impl.cc
@@ -362,8 +362,15 @@ bool StartupBrowserCreatorImpl::Launch(Profile* profile,
     if (process_startup) {
       if (browser_defaults::kOSSupportsOtherBrowsers &&
           !command_line_.HasSwitch(switches::kNoDefaultBrowserCheck)) {
-        if (!chrome::ShowAutolaunchPrompt(profile))
+        // Generally, the default browser prompt should not be shown on first
+        // run. However, when the set-as-default dialog has been suppressed, we
+        // need to allow it.
+        if ((!is_first_run_ ||
+             (browser_creator_ &&
+              browser_creator_->is_default_browser_dialog_suppressed())) &&
+            !chrome::ShowAutolaunchPrompt(profile)) {
           chrome::ShowDefaultBrowserPrompt(profile);
+        }
       }
 #if defined(OS_MACOSX)
       // Check whether the auto-update system needs to be promoted from user