The most recent version of Chrome needs the High DPI Mode to be enabled in the registry.
This has been documented many places, among others:
However with the most recent dev version of chrome (Version 37+) you need a different (or to be safe two) registry keys. Since 64bit and 32bit windows applications can place their registry information in two places.
and as previously
In both these locations you should create a DWORD entry named "high-dpi-support" with the value of 1.
For convenience you can download the registry files here which will set the registry for you: