Merge "Revert "Reduce memory churn from main thread looper tracing"" into main

import android.os.SystemClock;

import android.os.SystemProperties;

import android.os.Trace;

import android.os.TraceNameSupplier;

import android.util.Log;

import android.util.TimeUtils;

import android.view.animation.AnimationUtils;

    }

    private final class FrameDisplayEventReceiver extends DisplayEventReceiver

            implements Runnable, TraceNameSupplier {

            implements Runnable {

        private boolean mHavePendingVsync;

        private long mTimestampNanos;

        private int mFrame;

            mHavePendingVsync = false;

            doFrame(mTimestampNanos, mFrame, mLastVsyncEventData);

        }

        @androidx.annotation.NonNull

        @Override

        public String getTraceName() {

            // Returning just a simple name.

            // More detailed logging happens in onVsync() for TRACE_TAG_VIEW.

            return "FrameDisplayEventReceiver";

        }

    }

    private static final class CallbackRecord {

    private static final int MSG_PAUSED_FOR_SYNC_TIMEOUT = 37;

    final class ViewRootHandler extends Handler {

        @androidx.annotation.NonNull

        @Override

        public String getTraceName(@androidx.annotation.NonNull Message message) {

            if (message.getCallback() == null) {

                return getMessageName(message);

            }

            return super.getTraceName(message);

        }

        @Override

        public String getMessageName(Message message) {

            switch (message.what) {

        return vsyncId >= mBeginVsyncId;

    }

    // This will be executed in the HardwareRendererObserver handler, which is the FrameTracker

    // handler by construction.

    @Override

    public void onFrameMetricsAvailable(int dropCountSinceLastInvocation) {

        postCallback(() -> {

            if (mCancelled || mMetricsFinalized) {

                return;

            }

                        frameVsyncId, totalDurationNanos, isFirstFrame));

            }

            processJankInfos();

        });

    }

    @UiThread