Chromium uses a different multi-process architecture than other WebKit-based browsers, and supporting multiple architectures over the years has led to increasing complexity for both the WebKit and Chromium projects. This has slowed down the collective pace of innovation – so today, we are introducing Blink, a new open source rendering engine based on WebKit.
Odd that not long ago we were debating the likelihood and merits of WebKit becoming the de facto standard for HTML. Now Google itself is arguing against such a thing:
… we believe that having multiple rendering engines—similar to having multiple browsers—will spur innovation and over time improve the health of the entire open web ecosystem.
Together with the announcement from Mozilla and Samsung of a new Android browser which, one assumes, may become the default browser on Samsung Android phones, there is now significant diversity/competition/fragmentation in the browser market (if you can call it a market when everything is free).
The stated reason for the split concerns multi-process architecture, with claims that Google was unwilling to assist with integrating Chromium’s multi-process code into WebKit:
Before we wrote a single line of what would become WebKit2 we directly asked Google folks if they would be willing to contribute their multiprocess support back to WebKit, so that we could build on it. They said no.
At that point, our choices were to do a hostile fork of Chromium into the WebKit tree, write our own process model, or live with being single-process forever. (At the time, there wasn’t really an API-stable layer of the Chromium stack that packaged the process support.)
Writing our own seemed like the least bad approach.
Or maybe it was the other way around and Apple wanted to increase its control over WebKit and optimize it for the OSX and iOS rather than for multiple platforms (which would be the Apple way).
It matters little. Either way, it is unsurprising that Apple and Google find it difficult to cooperate when Android is the biggest threat to the iPhone and iPad.
The new reality is that WebKit, instead of being a de facto standard for the Web, will now be primarily an Apple rendering engine. Chrome/Chromium will be all Google, making it less attractive for others to adopt.
That said, several third parties have already adopted Chromium, thanks to the attractions of the Chromium Embedded Framework which makes it easy to use the engine in other projects. This includes Opera, which is now a Blink partner, and Adobe, which uses Chromium for its Brackets code editor and associated products in the Adobe Edge family.
The benefit of Blink is that diverse implementations promote the importance of standards. The risk of Blink is that if Google further increases the market share of Chrome, on desktop and mobile, to the point where it dominates, then it is in a strong position to dictate de-facto standards according to its own preferences, as suggested by this cynical take on the news.
The browser wars are back.