This update addresses the following vulnerability:

• CVE-2018-4345

This update brings the following changes:

• Many improvements and fixes for video playback with media source extensions (MSE), which improve the user experience across the board, and in particular for playback of WebM videos.
• Fix a memory leak during media playback when using playbin3.
• Fix portions of Web views not being rendered after resizing.
• Fix Resource Timing reporting for iframe elements.
• Fix the build with the remote Web Inspector disabled.
• Fix the build on ARMv7 with NEON extensions.
• Fix several crashes and rendering issues.