Refactoring startup logic for upcoming FRE changes (non-Win 10).

chrome/browser/first_run/first_run.h

Index: chrome/browser/first_run/first_run.h
diff --git a/chrome/browser/first_run/first_run.h b/chrome/browser/first_run/first_run.h
index ed9addcb7fb84c62013a58f49acce6407349f0f9..d8abcf5ab49a163af7b56ef9aaf0ab0483b39680 100644
--- a/chrome/browser/first_run/first_run.h
+++ b/chrome/browser/first_run/first_run.h
@@ -87,7 +87,8 @@ struct MasterPrefs {
   std::string suppress_default_browser_prompt_for_version;
 };
 
-// Returns true if this is the first time chrome is run for this user.
+// Returns true if Chrome should behave as if this is the first time Chrome is
+// run for this user.
 bool IsChromeFirstRun();
 
 #if defined(OS_MACOSX)
@@ -135,6 +136,10 @@ void SetShouldShowWelcomePage();
 // SetShouldShowWelcomePage() is called.
 bool ShouldShowWelcomePage();
 
+// Iterates over the given tabs, replacing "magic words" designated for
+// use in Master Preferences files with corresponding URLs.
+std::vector<GURL> ProcessMasterPrefsTabs(const std::vector<GURL>& tabs);
+
 // Sets a flag that will cause ShouldDoPersonalDataManagerFirstRun()
 // to return true exactly once, so that the browser loads
 // PersonalDataManager once the main message loop gets going.