JavaScript

• Fixed Math.round() which produced a wrong result for value prior to 0.5 (r249597)
• Made Promise implementation faster (r249509)

WebGPU

• Fixed matrices to have correct alignment (r249214)
• Implemented GPUUncapturedErrorEvent (r249539)
• Implemented SampleLevel(), SampleBias(), and SampleGrad() in WSL (r249453)
• Updated several interface and enum names to match specifications (r249601)

SVG

• Fixed fragment-only URL url(#fragment) to be resolved against the current document regardless of the HTML <base> element (r249416)
• Fixed SMIL animations of SVG <view> element (r249730)
• Made a change to get the value of the href attribute or the xlink:href attribute of SVG animation elements to get the animation target element (r249216)

Images

• Changed to respect EXIF orientations by default when images are rendered (r249364)

Web API

• Fixed copying and pasting two paragraphs with a newline between them resulting in a stray paragraph with newline inside (r249307)
• Fixed cancelled transitions on Google image search leaving content with opacity: 0 sometimes (r249511)
• Fixed document.fonts.ready resolving too quickly (r249295)
• Fixed responseXML for XMLHttpRequest in some cases returning null if a valid Content-Type ends with +xml (r249361)
• Made tabIndex IDL attribute reflect its content attribute (r249237)
• Updated HTMLImageElement::decode() to return a resolved promise for decoding non-bitmap images (r249367)
• Updated geolocation.watchPosition() and geolocation.getCurrentPosition() to return PERMISSION_DENIED when the context is not secure (r249207)

Service Workers

• Added missing origin check for Service-Worker-Allowed header (r249733)
• Added support for postMessage buffering between the Service Worker and window (r249629)
• Dropped support for registration resurrection (r249627)

WebRTC

• Added support to RTCDataChannel.send(Blob) (r249710)
• Fixed audio sometimes failing to be captured in WebRTC (r249715)

IndexedDB

• Changed to cache prepared SQLiteStatement in SQLiteIDBCursor to improve performance (r249729)
• Changed to use the SQL COUNT statement for count operations to improve performance (r249583)
• Updated the size of the database when the database operation is completed (r249333)

Web Inspector

• Network
  • Provided a way to view XML, HTML, and SVG resource responses as a DOM tree (r249451)
• Debugger
  • Added support for async event listener stack traces in Workers (r249315)
  • Added support for event breakpoints in Worker contexts (r249305)
  • Allow script resources to be blackboxed, which will prevent the debugger from pausing in that script (r249450)
• Resources
  • Provide a way to override the content of resources loaded over the network with local content in Web Inspector (r249504)
  • Fixed issue where links to CSS resources didn’t map to the right line after pretty printing if the line is after a multiline comment (r249596)
  • Fixed issue where the closing } of nested @media weren’t indented (r249607)
• Dark Mode
  • Fixed jarring white box-shadows in the Overview Timeline View in dark mode (r249655)
• Miscellaneous
  • Fixed import file pickers sometimes not importing (r249248)

Accessibility

• Fixed children cache to be re-computed if the tab index is removed (r249534)

Security

• Disabled TLS 1.0 and TLS 1.1 in WebSockets (r249684)