DeleteRequest      52 chrome/browser/history/android/android_history_provider_service.h   typedef CancelableRequest<DeleteCallback> DeleteRequest;
DeleteRequest      23 chrome/browser/history/history_marshaling_android.h     DeleteRequest;
DeleteRequest    1020 content/browser/renderer_host/media/media_stream_manager.cc void MediaStreamManager::DeleteRequest(const std::string& label) {