Tencent Holdings Ltd. has agreed a deal with Apple Inc. that will see the iPhone maker handle payments and take a 15% cut of purchases in WeChat mini games and apps, according to people familiar with the discussions.Resolving the issue, under negotiation between the two tech titans for over a year, opens a new revenue stream for Apple and takes pressure off Tencent. Apple had demanded Tencent close loopholes that app creators employed to funnel users to external payment systems, circumventing th...