Chrome Version: <From about:version: Google Chrome 66.0.3339.0>
Chrome OS Version: <From about:version: Windows 7 Professional SP1>
<b>Chrome OS Platform: <Make/model of computer running Chrome OS></b>
<b>Network info: <network, encryption type, router model (if known)></b>

Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Use below code to get system DPI, the width & height of the new created tmpNode sometimes can get correct value(tmpNode.offsetWidth & tmpNode.offsetHeight are 0 however in developer tools, it shows 96 x 96) but sometimes cannot. Same logic always work on Chrome 63&64

var tmpNode = document.createElement("DIV");
tmpNode.style.cssText = "width:1in;height:1in;position:absolute;left:0px;top:0px;z-index:99;visibility:hidden";
document.body.appendChild(tmpNode);
arrDPI[0] = parseInt(tmpNode.offsetWidth);
arrDPI[1] = parseInt(tmpNode.offsetHeight);
tmpNode.parentNode.removeChild(tmpNode);

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
sometimes

What is the impact to the user, and is there a workaround? If so, what is
it?
Page cannot be rendered, because many dependent code

Please provide any additional information below. Attach a screen shot or
log if possible.
See screenshot

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.

 

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