logd: disable worst uid prune for events buffer

There is some usage statistics that would be hurt by pruning by UID,
since _all_ usage statistics come from system_server. In other words
we expect it to be chatty. Until we formulate and evaluate a better
(eg: per-tag?) filtration mechanism, lets hold off pruning by UID.

Bug: 19608965
Change-Id: Iddd45a671e13bdcf3394c20919ad1f2e4ef36616
diff --git a/logd/LogStatistics.cpp b/logd/LogStatistics.cpp
index e0b8fd8..40fbfae 100644
--- a/logd/LogStatistics.cpp
+++ b/logd/LogStatistics.cpp
@@ -340,7 +340,7 @@
                 android::String8 name("UID");
                 android::String8 size("Size");
                 android::String8 pruned("Pruned");
-                if (id == LOG_ID_CRASH) {
+                if (!worstUidEnabledForLogid(id)) {
                     pruned.setTo("");
                 }
                 format_line(output, name, size, pruned);