Replaced NOTREACHED with LOG message in a couple of places

chrome/browser/webdata/keyword_table.cc

 // Copyright (c) 2011 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 "chrome/browser/webdata/keyword_table.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/stats_counters.h"
 #include "base/string_number_conversions.h"
@@ skipping 357 matching lines @@
   return MigrateToVersion40AddDefaultSearchProviderBackup();
 }
 
 bool KeywordTable::MigrateToVersion42AddKeywordsBackupTable() {
   return UpdateBackupSignature();
 }
 
 std::string KeywordTable::GetSignatureData() {
   int64 backup_value = 0;
   if (!meta_table_->GetValue(kDefaultSearchIDBackupKey, &backup_value)) {
-    NOTREACHED() << "Couldn't get id backup.";
+    LOG(ERROR) << "No backup id for signing.";
     return std::string();
   }
   std::string backup_data = base::Int64ToString(backup_value);
 
   std::string backup_url;
   if (!meta_table_->GetValue(kDefaultSearchBackupKey, &backup_url)) {
-    NOTREACHED() << "Couldn't get backup url";
+    LOG(ERROR) << "No backup for signing.";
     return std::string();
   }
   backup_data += backup_url;
 
   sql::Statement s(db_->GetCachedStatement(SQL_FROM_HERE,
       "SELECT id || short_name || keyword || favicon_url || url || "
       "safe_for_autoreplace || originating_url || date_created || "
       "usage_count || input_encodings || show_in_default_list || "
       "suggest_url || prepopulate_id || autogenerate_keyword || logo_id || "
       "created_by_policy || instant_url || last_modified || sync_guid "
@@ skipping 136 matching lines @@
 }
 
 bool KeywordTable::UpdateDefaultSearchProviderBackup(TemplateURLID id) {
   std::string backup;
   if (id != 0 && !GetTemplateURLBackup(id, &backup)) {
     NOTREACHED() << "Failed to get the keyword with id " << id;
     return false;
   }
   return meta_table_->SetValue(kDefaultSearchBackupKey, backup);
 }