Hide "New incognito window" from jump list if disabled by policy.

chrome/browser/jumplist_win.h

Index: chrome/browser/jumplist_win.h
diff --git a/chrome/browser/jumplist_win.h b/chrome/browser/jumplist_win.h
index 30739d68fbd23aa37394e2e7f1ecd0647839fae6..e43465f56e3cec5b41f7779bfdf3ffbf7d5f2dac 100644
--- a/chrome/browser/jumplist_win.h
+++ b/chrome/browser/jumplist_win.h
@@ -17,6 +17,7 @@
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/jumplist_updater_win.h"
+#include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/sessions/tab_restore_service.h"
 #include "chrome/browser/sessions/tab_restore_service_observer.h"
 #include "content/public/browser/browser_thread.h"
@@ -29,8 +30,9 @@ namespace content {
 class NotificationRegistrar;
 }
 
-class Profile;
 class PageUsageData;
+class PrefChangeRegistrar;
+class Profile;
 
 // A class which implements an application JumpList.
 // This class encapsulates operations required for updating an application
@@ -120,9 +122,15 @@ class JumpList : public TabRestoreServiceObserver,
   void OnMostVisitedURLsAvailable(
       const history::MostVisitedURLList& data);
 
+  // Callback for changes to the incognito mode availability pref.
+  void OnIncognitoAvailabilityChanged();

[sky, 2014/09/08 16:15:17]

Can this and the PostRunUpdate be private?

[Joao da Silva, 2014/09/08 16:44:10]

Done.

+
+  // Helper for RunUpdate() that determines its parameters.
+  void PostRunUpdate();
+
   // Runnable method that updates the jumplist, once all the data
   // has been fetched.
-  void RunUpdate();
+  void RunUpdate(IncognitoModePrefs::Availability incognito_availability);
 
   // Helper method for RunUpdate to create icon files for the asynchrounously
   // loaded icons.
@@ -145,6 +153,7 @@ class JumpList : public TabRestoreServiceObserver,
 
   // Lives on the UI thread.
   scoped_ptr<content::NotificationRegistrar> registrar_;
+  scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
 
   // App id to associate with the jump list.
   std::wstring app_id_;