Logging ExternalCache cannot find external_crx /var/cache/external_cache/

chrome/browser/chromeos/extensions/external_cache.cc

 // Copyright (c) 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 "chrome/browser/chromeos/extensions/external_cache.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/files/file_enumerator.h"
@@ skipping 88 matching lines @@
       extensions_->Remove(id, NULL);
 
       local_cache_.RemoveExtension(id, std::string());
       UpdateExtensionLoader();
 
       // Don't try to DownloadMissingExtensions() from here,
       // since it can cause a fail/retry loop.
       return;
     }
   }
-  LOG(ERROR) << "ExternalCache cannot find external_crx " << path.value();
+  DLOG(ERROR) << "ExternalCache cannot find external_crx " << path.value();
 }
 
 void ExternalCache::RemoveExtensions(const std::vector<std::string>& ids) {
   if (ids.empty())
     return;
 
   for (size_t i = 0; i < ids.size(); ++i) {
     cached_extensions_->Remove(ids[i], NULL);
     extensions_->Remove(ids[i], NULL);
     local_cache_.RemoveExtension(ids[i], std::string());
@@ skipping 226 matching lines @@
   OnPutExtension(id, file_path, file_ownership_passed);
   callback.Run(id, !file_ownership_passed);
 }
 
 std::string ExternalCache::Delegate::GetInstalledExtensionVersion(
     const std::string& id) {
   return std::string();
 }
 
 }  // namespace chromeos