IDR_WEBUI_ANALYTICS_JS - doesn't seem to be used in android - https://code.google.com/p/chromium/codesearch#chromium/src/ui/webui/resources/webui_resources.grd&q=js/analytics.js%20-file:tools%20-file:infra&sq=package:chromium&type=cs&l=18

IDR_WEBUI_ROBOTO_ROBOTO_MEDIUM_WOFF2, IDR_WEBUI_ROBOTO_ROBOTO_REGULAR_WOFF2, IDR_WEBUI_ROBOTO_ROBOTO_LIGHT_WOFF2 might not be used (pending investigation) - https://code.google.com/p/chromium/codesearch#chromium/src/ui/webui/resources/webui_resources.grd&q=js/analytics.js%20-file:tools%20-file:infra&sq=package:chromium&type=cs&l=19

IDR_WEBUI_JS_CR_UI_LIST, IDR_WEBUI_JS_CR_UI_TOUCH_HANDLER, IDR_WEBUI_JS_CR_UI_CARD_SLIDER - investigate this, talk to owner to see if this was ever meant to be shared.

IDR_NEWTAB_WEBSTORE_THUMBNAIL - do we use this? WEBSTORE keyword seems to make me think we aren't using it.