Please explain below why you believe CQ is not working.

This issue was created with help of the "CQ not working?" link on Rietveld.

I uploaded https://codereview.chromium.org/2551683002/#ps20001 where I modified some PNG resources in the first patch set.

In a follow up upload, https://codereview.chromium.org/2551683002/#ps20001, I deleted the PNG resources and replaced them with equivalent vector drawables.

The CL builds fine on my machine and Git shows these files as deleted.
However, https://codereview.chromium.org/2551683002/ continues to show the files as modified and both CQ lint and build fail because it thinks there are two Java resources with same name.

Lint error

chrome/android/java/res/drawable/amex_card.xml The following images appear both as density independent `.xml` files and as bitmap files: chrome/android/java/res/drawable-hdpi/amex_card.png, chrome/android/java/res/drawable/amex_card.xml: IconXmlAndPng [warning]

Build error (https://build.chromium.org/p/tryserver.chromium.android/builders/linux_android_rel_ng/builds/199133/steps/compile%20%28with%20patch%29/logs/stdio):

res/drawable/amex_card.xml:0: error: Resource entry amex_card is already defined.
res/drawable/amex_card.png:0: Originally defined here.

I suspect the issue is caused because the first upload modified the file and a subsequent upload deleted it. https://codereview.chromium.org/2551683002/ correctly shows files as deleted for those files that were deleted before prior modification in the CL.

I tried various commands such as git rm -f, rebase, restored the file and then deleted again but that did not help.