[sql] Track SQLite error codes from sql::Recovery ATTACH.

sql/recovery.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sql/recovery.h"
 
 #include <stddef.h>
 
 #include "base/files/file_path.h"
 #include "base/format_macros.h"
@@ skipping 222 matching lines @@
 
   // Turn on |SQLITE_RecoveryMode| for the handle, which allows
   // reading certain broken databases.
   if (!recover_db_.Execute("PRAGMA writable_schema=1")) {
     RecordRecoveryEvent(RECOVERY_FAILED_WRITABLE_SCHEMA);
     return false;
   }
 
   if (!recover_db_.AttachDatabase(db_path, "corrupt")) {
     RecordRecoveryEvent(RECOVERY_FAILED_ATTACH);
+    UMA_HISTOGRAM_SPARSE_SLOWLY("Sqlite.RecoveryAttachError",
+                                recover_db_.GetErrorCode());
     return false;
   }
 
   RecordRecoveryEvent(RECOVERY_SUCCESS_INIT);
   return true;
 }
 
 bool Recovery::Backup() {
   CHECK(db_);
   CHECK(recover_db_.is_open());
@@ skipping 451 matching lines @@
       // - SQLITE_READONLY - permissions could be fixed.
       // - SQLITE_IOERR - rewrite using new blocks.
       // - SQLITE_FULL - recover in memory and rewrite subset of data.
 
     default:
       return false;
   }
 }
 
 }  // namespace sql