Create BlacklistManager, which will aggregate individual blacklists into one compiled one

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 7376fb7c5107470a5b1cd2bb4d9547fdcbd3c00e..2768c8ee22e610d53d07459e532fba81e71d00f9 100644
--- a/chrome/common/notification_type.h
+++ b/chrome/common/notification_type.h
@@ -617,6 +617,13 @@ class NotificationType {
     PERSONALIZATION,
     PERSONALIZATION_CREATED,
 
+    // Privacy blacklists ------------------------------------------------------
+
+    // Sent when a privacy blacklist path provider changes the list of its
+    // blacklist paths (like adds/removes items). The details are
+    // a BlacklistPathProvider, and the source is a Profile.
+    PRIVACY_BLACKLIST_PATH_PROVIDER_UPDATED,
+
     // User Scripts ------------------------------------------------------------
 
     // Sent when there are new user scripts available.  The details are a