Start refractoring extension permissions into ExtensionPermissionSet.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 6f09c2f9be034bdb49566d7f9c37bff4afa3a487..8d0388e7509cbb0d7692891ddcf2b21f2c83dda8 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -481,7 +481,7 @@ WebKit::WebNotificationPresenter::Permission
   const Extension* extension =
       io_data->GetExtensionInfoMap()->extensions().GetByURL(source_url);
   if (extension &&
-      extension->HasApiPermission(Extension::kNotificationPermission)) {
+      extension->HasApiPermission(ExtensionAPIPermission::kNotification)) {
     return WebKit::WebNotificationPresenter::PermissionAllowed;
   }
 
@@ -544,7 +544,7 @@ bool ChromeContentBrowserClient::CanCreateWindow(
     const Extension* extension =
         io_data->GetExtensionInfoMap()->extensions().GetByURL(source_url);
     return (extension &&
-            extension->HasApiPermission(Extension::kBackgroundPermission));
+            extension->HasApiPermission(ExtensionAPIPermission::kBackground));
   }
   return true;
 }