The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c2dc689ce3df14d3fa613cc22c3f132c7eba4463

commit c2dc689ce3df14d3fa613cc22c3f132c7eba4463
Author: dmazzoni <dmazzoni@chromium.org>
Date: Tue May 23 17:36:17 2017

Automation API hit test should automatically convert to integer coordinates.

The automation API specifies the hit test coordinates should be
integers which is fine since there's no reason for sub-pixel
precision.

However, it crashes if you pass it a non-integer, which is not good!
It should just convert to an integer.

BUG= 725159 
TBR=aboxhall

Review-Url: https://codereview.chromium.org/2900803003
Cr-Commit-Position: refs/heads/master@{#473960}

[modify] https://crrev.com/c2dc689ce3df14d3fa613cc22c3f132c7eba4463/chrome/renderer/resources/extensions/automation/automation_node.js
[modify] https://crrev.com/c2dc689ce3df14d3fa613cc22c3f132c7eba4463/chrome/test/data/extensions/api_test/automation/sites/hit_test.html
[modify] https://crrev.com/c2dc689ce3df14d3fa613cc22c3f132c7eba4463/chrome/test/data/extensions/api_test/automation/tests/desktop/hit_test.js