Add information about sync session and other useful data to about:sync.

chrome/browser/sync/engine/syncapi.h

Index: chrome/browser/sync/engine/syncapi.h
diff --git a/chrome/browser/sync/engine/syncapi.h b/chrome/browser/sync/engine/syncapi.h
index 7ccbe03eea445045ebcfce4a49c6d1336779b633..7e713011b6f25e6b52c8ac6a6f5651e86b1ffcf6 100644
--- a/chrome/browser/sync/engine/syncapi.h
+++ b/chrome/browser/sync/engine/syncapi.h
@@ -736,6 +736,10 @@ class SyncManager {
     // Total number of overwrites due to conflict resolver since browser start.
     int num_local_overwrites_total;
     int num_server_overwrites_total;
+
+    // Count of empty and non empty getupdates;
+    int useless_sync_cycles;
+    int useful_syn_cycles;

[akalin, 2011/05/17 02:03:01]

syn -> sync

[lipalani1, 2011/05/18 00:28:07]

oh boy. I did a compile before sending out.The only reason I was able to think
is I might have pressed a delete key or undo button before committing to git...
On 2011/05/17 02:03:01, akalin wrote:
Done.

   };
 
   // An interface the embedding application implements to receive notifications