Inactive user toast. Set chrome as default.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
===================================================================
--- chrome/browser/chrome_browser_main.cc	(revision 149795)
+++ chrome/browser/chrome_browser_main.cc	(working copy)
@@ -794,6 +794,13 @@
       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
+    // At this point the user is willing to try chrome again.
+    if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
+      // Only set in the unattended case, the interactive case is Windows 8.
+      if (ShellIntegration::CanSetAsDefaultBrowser() ==
+          ShellIntegration::SET_DEFAULT_UNATTENDED)
+        ShellIntegration::SetAsDefaultBrowser();
+    }
 #else
     // We don't support retention experiments on Mac or Linux.
     return content::RESULT_CODE_NORMAL_EXIT;