The iOS version is based on WebKit rendering engine
Google spent a “lot of time” to bring iOS version to Chromium
Google recently rolled out the desktop version of Chrome 56
Google has publicized that after many years of keeping Chrome for iOS discrete from its Chromium project, it is now open-sourcing the browser on Apple’s Phones platform. Despite the “additional complexity” related with the platform, the company states that its team spent more time over the past many years to make the required changes required to upstream the code for Chrome on iOS into Chromium.
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If you are surprised why Chrome for iOS was kept separate from the Chromium project even though Android version linked Chromium back in 2015, this is because the iOS version of the browser is built on top of the WebKit rendering engine instead of Google’s Blink engine. Due to the restraints associated with iOS, all browsers must be built on top of WebKit rendering engine, Google prompted readers in its blog post.
“For Chromium, it means supporting both WebKit as well as Blink, Chrome’s rendering engine for different platforms. That made some extra complexities which we required to avoid placing in the Chromium code base,” it added.
The upstreaming for the code has now been finished and developers can now compile the iOS version of Chromium just like they do for different platforms. “Development speed is also faster now that all of the tests for Chrome for iOS are available to the entire Chromium communal and automatically perform any time that code is checked in,” the company stated.
Google recently started rolling out Chrome 56 for Linux, Mac, and Windows. The new version of the desktop browser notably flags certain HTTP websites as unsafe in the address bar and also puts HTML5 as default over Flash for all customers.