[content] favor DCHECK_CURRENTLY_ON for better logs

content/browser/indexed_db/indexed_db_backing_store.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 "content/browser/indexed_db/indexed_db_backing_store.h"
 
 #include <algorithm>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 2344 matching lines @@
                      chained_blob_writer_,
                      success,
                      bytes_written_));
     }
   }
 
   void WriteBlobToFileOnIOThread(const FilePath& file_path,
                                  const GURL& blob_url,
                                  const base::Time& last_modified,
                                  net::URLRequestContext* request_context) {
-    DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+    DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
     scoped_ptr<storage::FileStreamWriter> writer(
         storage::FileStreamWriter::CreateForLocalFile(
             task_runner_.get(),
             file_path,
             0,
             storage::FileStreamWriter::CREATE_NEW_FILE));
     scoped_ptr<FileWriterDelegate> delegate(new FileWriterDelegate(
         writer.Pass(), storage::FlushPolicy::FLUSH_ON_COMPLETION));
 
     DCHECK(blob_url.is_valid());
@@ skipping 2046 matching lines @@
 
 IndexedDBBackingStore::Transaction::WriteDescriptor::WriteDescriptor(
     const WriteDescriptor& other) = default;
 IndexedDBBackingStore::Transaction::WriteDescriptor::~WriteDescriptor() =
     default;
 IndexedDBBackingStore::Transaction::WriteDescriptor&
     IndexedDBBackingStore::Transaction::WriteDescriptor::
     operator=(const WriteDescriptor& other) = default;
 
 }  // namespace content