Introduced the URLBlacklistManager, and wired it to various places.

net/base/net_log_event_type_list.h

Index: net/base/net_log_event_type_list.h
diff --git a/net/base/net_log_event_type_list.h b/net/base/net_log_event_type_list.h
index db26071c5719441b1d2481acdfdad24ad82401b0..1369790cd9fe3f678374840aa5e93ce9874aa577 100644
--- a/net/base/net_log_event_type_list.h
+++ b/net/base/net_log_event_type_list.h
@@ -1206,3 +1206,13 @@ EVENT_TYPE(CHROME_EXTENSION_MODIFIED_HEADERS)
 //    "extension_id": <Extension ID that was ignored>
 //  }
 EVENT_TYPE(CHROME_EXTENSION_IGNORED_DUE_TO_CONFLICT)
+
+// ------------------------------------------------------------------------
+// HostBlacklistManager
+// ------------------------------------------------------------------------
+
+// TODO(joaodasilva): Layering violation, see comment above.
+// http://crbug.com/90674.
+
+// This event is created when a request is blocked by a policy.
+EVENT_TYPE(CHROME_POLICY_ABORTED_REQUEST)