leveldb: Moved to LevelDBEnv.IOError.BFE histogram entries.

content/browser/indexed_db/leveldb/leveldb_database.cc

Index: content/browser/indexed_db/leveldb/leveldb_database.cc
diff --git a/content/browser/indexed_db/leveldb/leveldb_database.cc b/content/browser/indexed_db/leveldb/leveldb_database.cc
index aab1255d145a6e46d3f64e9a602365c9156d5d15..99bc3afc5b423a45092133de60f3ee9ece5a31e3 100644
--- a/content/browser/indexed_db/leveldb/leveldb_database.cc
+++ b/content/browser/indexed_db/leveldb/leveldb_database.cc
@@ -199,9 +199,9 @@ static void ParseAndHistogramIOErrorDetails(const std::string& histogram_name,
 
   std::string error_histogram_name(histogram_name);
 
-  if (result == leveldb_env::METHOD_AND_PFE) {
+  if (result == leveldb_env::METHOD_AND_BFE) {
     DCHECK_LT(error, 0);
-    error_histogram_name.append(std::string(".PFE.") +
+    error_histogram_name.append(std::string(".BFE.") +
                                 leveldb_env::MethodIDToString(method));
     base::LinearHistogram::FactoryGet(
         error_histogram_name,