Fix some UMA enum type mismatches

net/disk_cache/simple/simple_synchronous_entry.cc

Index: net/disk_cache/simple/simple_synchronous_entry.cc
diff --git a/net/disk_cache/simple/simple_synchronous_entry.cc b/net/disk_cache/simple/simple_synchronous_entry.cc
index 24bc3b1b2f05d2b6cd97eac35cb7e4ca41615818..aac3d1143a32ef540a43eedc656cfdab2e02fe3c 100644
--- a/net/disk_cache/simple/simple_synchronous_entry.cc
+++ b/net/disk_cache/simple/simple_synchronous_entry.cc
@@ -73,6 +73,7 @@ enum CheckEOFResult {
 enum CloseResult {
   CLOSE_RESULT_SUCCESS,
   CLOSE_RESULT_WRITE_FAILURE,
+  CLOSE_RESULT_MAX,
 };
 
 // Used in histograms, please only add entries at the end.
@@ -108,7 +109,7 @@ void RecordCheckEOFResult(net::CacheType cache_type, CheckEOFResult result) {
 
 void RecordCloseResult(net::CacheType cache_type, CloseResult result) {
   SIMPLE_CACHE_UMA(ENUMERATION,
-                   "SyncCloseResult", cache_type, result, WRITE_RESULT_MAX);
+                   "SyncCloseResult", cache_type, result, CLOSE_RESULT_MAX);
 }
 
 void RecordKeySHA256Result(net::CacheType cache_type, KeySHA256Result result) {