Page actions behave as disableable browser actions when script badges are enabled.

chrome/common/extensions/extension.cc

Index: chrome/common/extensions/extension.cc
diff --git a/chrome/common/extensions/extension.cc b/chrome/common/extensions/extension.cc
index 462ce13779bf774696cf931537d61ee035c96cb9..d6033d5f487f8b21c342c28640e08ec65421569d 100644
--- a/chrome/common/extensions/extension.cc
+++ b/chrome/common/extensions/extension.cc
@@ -805,9 +805,10 @@ scoped_ptr<ExtensionAction> Extension::LoadExtensionActionHelper(
     string16* error) {
   scoped_ptr<ExtensionAction> result(new ExtensionAction(id(), action_type));
 
-  // Page actions are hidden by default, and browser actions ignore
-  // visibility.
-  result->SetIsVisible(ExtensionAction::kDefaultTabId, false);
+  // Page actions are hidden/disabled by default, and browser actions are
+  // visible/enabled by default.
+  result->SetIsVisible(ExtensionAction::kDefaultTabId,
+                       action_type != ExtensionAction::TYPE_PAGE);
 
   if (manifest_version_ == 1) {
     ListValue* icons = NULL;