Unify the Windows Parental Controls Platform Caching

chrome/browser/prefs/incognito_mode_prefs.h

Index: chrome/browser/prefs/incognito_mode_prefs.h
diff --git a/chrome/browser/prefs/incognito_mode_prefs.h b/chrome/browser/prefs/incognito_mode_prefs.h
index 0837cb43e452a2f2475d3a70a5b364705a6041ae..36c0c72a73dcb801960cf0a512a8ab4d08cb00b0 100644
--- a/chrome/browser/prefs/incognito_mode_prefs.h
+++ b/chrome/browser/prefs/incognito_mode_prefs.h
@@ -64,21 +64,12 @@ class IncognitoModePrefs {
   static bool CanOpenBrowser(Profile* profile);
 
   // Returns whether parental controls have been enabled on the platform. This
-  // method simply returns a cached value and thus the result may be stale. May
-  // be called on any thread.
-  static bool ArePlatformParentalControlsEnabledCached();
-
-#if defined(OS_WIN)
-  // Initializes the parental control settings. Must be called on UI thread and
-  // before |ArePlatformParentalControlsEnabled|.
-  static void InitializePlatformParentalControls();
-#endif // OS_WIN
-
- private:
-  // Returns whether parental controls have been enabled on the platform, which
-  // if enabled will overrule the Availability as configured in prefs.
+  // method evaluates and caches if the platform controls have been enabled on
+  // the first call, which must be on the UI thread when IO and blocking are
+  // allowed. Subsequent calls may be from any thread.
   static bool ArePlatformParentalControlsEnabled();
 
+ private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(IncognitoModePrefs);
 };