am b7304593: Merge "Cap the size of StrictMode buffering we do before calling...

        if (dbox == null || !dbox.isTagEnabled(dropboxTag)) return;

        boolean bufferWasEmpty;

        boolean needsFlush;

        final StringBuilder sb = isSystemApp ? mStrictModeBuffer : new StringBuilder(1024);

        synchronized (sb) {

            bufferWasEmpty = sb.length() == 0;

                sb.append(crashInfo.stackTrace);

            }

            sb.append("\n");

            // Only buffer up to ~64k.  Various logging bits truncate

            // things at 128k.

            needsFlush = (sb.length() > 64 * 1024);

        }

        // Non-system apps are isolated with a different tag & policy.

        // They're also not batched.  Batching is useful during system

        // boot with strict system-wide logging policies and lots of

        // things firing, but not common with regular apps, which

        // won't ship with StrictMode dropboxing enabled.

        if (!isSystemApp) {

        // Flush immediately if the buffer's grown too large, or this

        // is a non-system app.  Non-system apps are isolated with a

        // different tag & policy and not batched.

        //

        // Batching is useful during internal testing with

        // StrictMode settings turned up high.  Without batching,

        // thousands of separate files could be created on boot.

        if (!isSystemApp || needsFlush) {

            new Thread("Error dump: " + dropboxTag) {

                @Override

                public void run() {

                    dbox.addText(dropboxTag, sb.toString());

                    String report;

                    synchronized (sb) {

                        report = sb.toString();

                        sb.delete(0, sb.length());

                        sb.trimToSize();

                    }

                    if (report.length() != 0) {

                        dbox.addText(dropboxTag, report);

                    }

                }

            }.start();

            return;

        // System app batching:

        if (!bufferWasEmpty) {

            // An existing dropbox-writing thread is outstanding and

            // will handle it.

            // An existing dropbox-writing thread is outstanding, so

            // we don't need to start it up.  The existing thread will

            // catch the buffer appends we just did.

            return;

        }