Merge "Fix one of the potential ANR issues from AwesomePlayer" into jb-dev

        String8 mimeType;

        float confidence;

        sp<AMessage> dummy;

        bool success = SniffWVM(dataSource, &mimeType, &confidence, &dummy);

        bool success;

        // SniffWVM is potentially blocking since it may require network access.

        // Do not call it with mLock held.

        mLock.unlock();

        success = SniffWVM(dataSource, &mimeType, &confidence, &dummy);

        mLock.lock();

        if (!success

                || strcasecmp(