Remove broken variables from sync's AllStatus

chrome/browser/sync/protocol/client_debug_info.proto

Index: chrome/browser/sync/protocol/client_debug_info.proto
diff --git a/chrome/browser/sync/protocol/client_debug_info.proto b/chrome/browser/sync/protocol/client_debug_info.proto
index 55ca4f643fbfeb08a17327c24b83f298ff8de5d9..6201077bf2410edf83a33ab86ad9ba2df5c8dd4e 100644
--- a/chrome/browser/sync/protocol/client_debug_info.proto
+++ b/chrome/browser/sync/protocol/client_debug_info.proto
@@ -14,7 +14,7 @@ package sync_pb;
 // The additional info here is from SyncerStatus. They get sent when the event
 // SYNC_CYCLE_COMPLETED  is sent.
 message SyncCycleCompletedEventInfo {
-  optional bool syncer_stuck = 1;
+  // optional bool syncer_stuck = 1; // Was always false, now obsolete.
   optional int32 num_blocking_conflicts = 2;
   optional int32 num_non_blocking_conflicts = 3;
 }
@@ -55,4 +55,4 @@ message DebugInfo {
 
   // Indicates client has dropped some events to save bandwidth.
   optional bool events_dropped = 4;
-}
+}