Never show the default browser prompt over the first run promos

chrome/browser/first_run/first_run.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_FIRST_RUN_FIRST_RUN_H_
 #define CHROME_BROWSER_FIRST_RUN_FIRST_RUN_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
 
 class GURL;
 class Profile;
 
 namespace base {
 class CommandLine;
 class FilePath;
 }
 
+namespace content {
+class WebContents;
+}
+
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 // This namespace contains the chrome first-run installation actions needed to
 // fully test the custom installer. It also contains the opposite actions to
 // execute during uninstall. When the first run UI is ready we won't
 // do the actions unconditionally. Currently the only action is to create a
 // desktop shortcut.
 //
@@ skipping 96 matching lines @@
 // exactly once, so that the browser loads the welcome tab once the
 // message loop gets going.
 void SetShouldShowWelcomePage();
 
 // Returns true if the welcome page should be shown.
 //
 // This will return true only once: The first time it is called after
 // SetShouldShowWelcomePage() is called.
 bool ShouldShowWelcomePage();
 
+// Returns true if |contents| hosts one of the welcome pages.
+bool IsOnWelcomePage(content::WebContents* contents);
+
 // 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.
 void SetShouldDoPersonalDataManagerFirstRun();
 
 // Returns true if the autofill personal data manager first-run action
@@ skipping 41 matching lines @@
 //
 // See chrome/installer/util/master_preferences.h for a description of
 // 'master_preferences' file.
 ProcessMasterPreferencesResult ProcessMasterPreferences(
     const base::FilePath& user_data_dir,
     MasterPrefs* out_prefs);
 
 }  // namespace first_run
 
 #endif  // CHROME_BROWSER_FIRST_RUN_FIRST_RUN_H_