Merge "Isolate statsd_write trace when reporting jank." into rvc-dev am: 0050943c

                ATRACE_NAME("Jank detected");

                ALOGD("Detected janky event. Missed frames: %d", mMissedFrameJankCount);

                const int32_t jankyDurationMillis = jankDuration / (1000 * 1000);

                {

                    ATRACE_NAME("Pushing to statsd");

                    android::util::stats_write(android::util::DISPLAY_JANK_REPORTED,

                                               jankyDurationMillis, mMissedFrameJankCount);

                }

            }

            // We either reported a jank event or we missed the trace

            // window, so clear counters here.