Another 1,511 changes further on, 885 made at Chromium’s repository and 626 at WebKit’s. Last week’s highlights include upstreaming of OpenBSD support into Chromium, lots of progress on implementing support for HTML5 Microdata and first steps towards supporting the CSS cross-fade() function for images.

At Chromium, a series of patches has been contributed by Robert Nagy which strongly improve support for the OpenBSD operating system. Previously it was maintained as a port on OpenBSD Ports.

Within Web Inspector, it’s now possible to select the indentation which will be used in the text editors. The four options available are two, four or eight spaces, or a tab. Advanced search is now available for content scripts and inline background-image CSS properties won’t show a warning anymore in the console.

Arko Saha’s work on implementing the HTML5 Microdata properties and DOM API is progressing nicely, as the itemprop, itemref and itemvalue properties landed last week. The itemtype attribute has been enhanced to accept a space-separated list of values, and code for the itemid attribute is just about to land as well.

As for specification related improvements, drawing images on a canvas by using certain composition modes has been fixed. Input step-values may now start with dots, IndexedDB has been taught the deleteDatabase method and two patches landed implementing parts of the Mutation Observers specification.

Support for argument-less functions has been added, in preparation of the greyscale CSS filter and column progression is now independent of writing mode. Automatic sizing of flexbox has been fixed, setting visibility: hidden on video elements on Safari now works properly and three more CSS 2.1 test-failures have been fixed, which includes proper support for intrinsic background sizes.

Parsing of two new CSS features has landed, namely for line-grid and for the cross-fade() function. The former is a shorthand for line-grid-mode and line-grid-progression defined in the CSS Text Module, whereas the latter allows cross fading images and is defined in CSS Image Values Level 4.

Other changes which occurred last week:

• Accessibility of the omnibox in Chromium has been vastly improved.
• Code complexity of various files in WebCore is being lowered by ongoing refactoring.
• More minor speed-ups for Safari’s JavaScript engine, 0.6% and 1%.
• Work is being done to store strings in 8-bit buffers where possible, saving significant amounts of memory.
• The first patch for a GStreamer-based Web Audio API implementation landed at WebKit.
• A two-percent speed up of loading time on the HTML5 specification, followed by another 7%.
• With thanks to Anthony Ricaud, these blog items will now be listed on Planet WebKit as well.
• The first big step for enabling proper printing layout tests for Chromium has been made.
• The tab strip for Chromium’s Linux version is being done, improving CPU usage.
• Support for Panels is now enabled by default on Windows, Mac OS X and Linux builds of Chromium.
• Attaching a debugger to the experimental Web Inspector API had it’s arguments changed.
• The first method of a new experimental Extension API has landed, namely a Top Sites API.
• Applescript commands have been added to control the presentation mode on Mac OS X.
• Enabling the Media Source API may now be done through the --enable-media-source switch.
• The GamePad API can now be enabled through the --enable-gamepad command line switch.

In other news, Andy Wingo published an excellent article about the new DFG JIT Apple is implementing in JavaScriptCore. Picks for the this week are notifications for the GTK port and four new media pseudo-classes.