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

storage/browser/fileapi/file_system_context.cc

 // Copyright (c) 2012 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 "storage/browser/fileapi/file_system_context.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 198 matching lines @@
   if (external_mount_points)
     url_crackers_.push_back(external_mount_points);
   url_crackers_.push_back(ExternalMountPoints::GetSystemInstance());
   url_crackers_.push_back(IsolatedContext::GetInstance());
 }
 
 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();
        ++iter) {
     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) {
       // Continue the loop, but record the failure.
       success = false;
     }
   }
 
   return success;
 }
@@ skipping 396 matching lines @@
 
   // TODO(mtomasz): Not all fields should be required for ResolveURL.
   operation_runner()->GetMetadata(
       url, FileSystemOperation::GET_METADATA_FIELD_IS_DIRECTORY |
                FileSystemOperation::GET_METADATA_FIELD_SIZE |
                FileSystemOperation::GET_METADATA_FIELD_LAST_MODIFIED,
       base::Bind(&DidGetMetadataForResolveURL, path, callback, info));
 }
 
 }  // namespace storage