Count number of origins with data affected by clearing "cookies and site data".

storage/browser/fileapi/file_system_context.cc

Index: storage/browser/fileapi/file_system_context.cc
diff --git a/storage/browser/fileapi/file_system_context.cc b/storage/browser/fileapi/file_system_context.cc
index 142489523a08d3dd7112aaf8ebb16ac571550400..0db6c5ddfa8dcba6bf2efac9fd3e07e25520ffe1 100644
--- a/storage/browser/fileapi/file_system_context.cc
+++ b/storage/browser/fileapi/file_system_context.cc
@@ -216,7 +216,7 @@ bool FileSystemContext::DeleteDataForOriginOnFileTaskRunner(
     const GURL& origin_url) {
   DCHECK(default_file_task_runner()->RunsTasksOnCurrentThread());
   DCHECK(origin_url == origin_url.GetOrigin());
-
+  LOG(ERROR) << origin_url.spec();
   bool success = true;
   for (FileSystemBackendMap::iterator iter = backend_map_.begin();
        iter != backend_map_.end();
@@ -224,6 +224,7 @@ bool FileSystemContext::DeleteDataForOriginOnFileTaskRunner(
     FileSystemBackend* backend = iter->second;
     if (!backend->GetQuotaUtil())
       continue;
+    LOG(ERROR) << "fs type: " << iter->first;
     if (backend->GetQuotaUtil()->DeleteOriginDataOnFileTaskRunner(
             this, quota_manager_proxy(), origin_url, iter->first)
             != base::File::FILE_OK) {