Moved IS_EPHEMERAL flag to extension prefs

chrome/browser/extensions/extension_util.h

Index: chrome/browser/extensions/extension_util.h
diff --git a/chrome/browser/extensions/extension_util.h b/chrome/browser/extensions/extension_util.h
index 5ffcb9e0a71441d51c278146227252fca3fc6072..7b2c19e1bfddd8a7ae1303d3c9d1eef325c71866 100644
--- a/chrome/browser/extensions/extension_util.h
+++ b/chrome/browser/extensions/extension_util.h
@@ -74,10 +74,6 @@ bool IsAppLaunchableWithoutEnabling(const std::string& extension_id,
 bool IsExtensionIdle(const std::string& extension_id,
                      content::BrowserContext* context);
 
-// Returns true if |extension_id| is installed permanently and not ephemerally.
-bool IsExtensionInstalledPermanently(const std::string& extension_id,
-                                     content::BrowserContext* context);
-
 // Returns the site of the |extension_id|, given the associated |context|.
 // Suitable for use with BrowserContext::GetStoragePartitionForSite().
 GURL GetSiteForExtensionId(const std::string& extension_id,