Make chrome.omnibox.setDefaultSuggestion work when called inside

chrome/common/notification_type.h

Index: chrome/common/notification_type.h
diff --git a/chrome/common/notification_type.h b/chrome/common/notification_type.h
index 3adc3ff0641b0c44e990cc25a5031437286350b8..c7b3c3564c26b37b32ca2b81e717215cb22e0eea 100644
--- a/chrome/common/notification_type.h
+++ b/chrome/common/notification_type.h
@@ -955,6 +955,10 @@ class NotificationType {
     // session. The source is the profile.
     EXTENSION_OMNIBOX_INPUT_ENTERED,
 
+    // Sent when an omnibox extension has updated the default suggestion. The
+    // source is the profile.
+    EXTENSION_OMNIBOX_DEFAULT_SUGGESTION_CHANGED,
+
     // Sent when an extension changes a preference value. The source is the
     // profile, and the details are an ExtensionPrefStore::ExtensionPrefDetails
     // object.