An update of QtWebEngine to the security and bugfix release 5.9.2, including:

Chromium Snapshot:

• Security fixes from Chromium up to version 61.0.3163.79 Including: CVE-2017-5092, CVE-2017-5093, CVE-2017-5095, CVE-2017-5097, CVE-2017-5099, CVE-2017-5102, CVE-2017-5103, CVE-2017-5107, CVE-2017-5112, CVE-2017-5114, CVE-2017-5117 and CVE-2017-5118
• Fixed Skia to to render text correctly with FreeType 2.8.1
• [QTBUG-50389] Fixed assert on some flash content

QtWebEngine:

• [QTBUG-57505] Handle --force-webrtc-ip-handling-policy on command-line
• [QTBUG-58306] Fixed handling of menu key
• [QTBUG-60790] Fixed dragging images to desktop
• [QTBUG-61354] Set referrer on download requests
• [QTBUG-61429] Fixed cancelling IME composition
• [QTBUG-61506] Stop searching when navigating away
• [QTBUG-61910] Fixed an issue where system proxy settings were not picked up correctly
• [QTBUG-62112] Fixed upside-down rendering in software rendering mode
• [QTBUG-62112] Fixed rendering of content with preserve-3d in CSS
• [QTBUG-62311] Fixed hang when exiting with open combobox
• [QTBUG-62808] Handle --explicitly-allowed-ports on command-line
• [QTBUG-62898] Fixed accessing webchannels from document-creation user-scripts after navigation.
• [QTBUG-62942] Fixed committing IME composition on touch events

QWebEngineView:

• [QTBUG-61621] Fixed propagation of unhandled key press events

WebEngineView:

• The callback version of printToPdf is now called with a proper bytearray result instead of a PDF data in a javascript string.

Platform Specific Changes:

• [QTBUG-61528, QTBUG-62673] Fixed various multilib build configurations
• [QTBUG-61846] Fixed host builds on Arm and MIPS