New version of WebKit. WebKit is the open source code Google Chrome uses to render web pages (HTML and CSS). 22.214.171.124 used basically the same version of WebKit as Safari 3.1, but the WebKit team has made a lot of improvements since that was released. 156.1 uses WebKit version 528.8 or, more precisely, revision 39410 from the WebKit source tree. In addition to fixing bugs and enabling features like full-page zoom and autoscroll, the new version also enables some nifty CSS features.
New network code. Google Chrome now has its own implementation of the HTTP network protocol (we were using the WinHTTP library on Windows, but need common code for Mac and Linux). We fixed a few bugs in HTTP authentication and made Google Chrome more compatible with servers that reply with invalid HTTP responses. We need feedback on anything that's currently broken, particularly with proxy servers, secure (https) sites, and sites that require log in.
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