OP_WRITE          171 net/disk_cache/blockfile/in_flight_backend_io.cc   operation_ = OP_WRITE;
OP_WRITE          297 net/disk_cache/blockfile/in_flight_backend_io.cc     case OP_WRITE:
OP_WRITE          122 net/disk_cache/tracing/tracing_cache_backend.cc                  TracingCacheBackend::OP_WRITE, extra, callback),
OP_WRITE          125 net/disk_cache/tracing/tracing_cache_backend.cc     RecordEvent(start_time, TracingCacheBackend::OP_WRITE, extra, rv);