Merge "BLASTSyncEngine: Logging and trace around commit timeout" into tm-dev

            for (WindowContainer wc : mRootMembers) {

                wc.waitForSyncTransactionCommit(wcAwaitingCommit);

            }

            final Runnable callback = new Runnable() {

            class CommitCallback implements Runnable {

                // Can run a second time if the action completes after the timeout.

                boolean ran = false;

                public void run() {

                public void onCommitted() {

                    synchronized (mWm.mGlobalLock) {

                        if (ran) {

                            return;

                        wcAwaitingCommit.clear();

                    }

                }

                // Called in timeout

                @Override

                public void run() {

                    // Sometimes we get a trace, sometimes we get a bugreport without

                    // a trace. Since these kind of ANRs can trigger such an issue,

                    // try and ensure we will have some visibility in both cases.

                    Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, "onTransactionCommitTimeout");

                    Slog.e(TAG, "WM sent Transaction to organized, but never received" +

                           " commit callback. Application ANR likely to follow.");

                    Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER);

                    onCommitted();

                }

            };

            merged.addTransactionCommittedListener((r) -> { r.run(); }, callback::run);

            CommitCallback callback = new CommitCallback();

            merged.addTransactionCommittedListener((r) -> { r.run(); }, callback::onCommitted);

            mWm.mH.postDelayed(callback, BLAST_TIMEOUT_DURATION);

            Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, "onTransactionReady");