Mitigate spoofing attempt using Latin letters.

components/url_formatter/top_domains/README

Index: components/url_formatter/top_domains/README
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+* alexa_domains.list
+  It is an input to make_top_domain_list and is made up of list of Alexa
+  top 10k domains (one per line).
+  It's derived from
+   src/tools/perf/page_sets/alexa1-10000-urls.json with make_alexa_top_list.py
+
+* alexa_names_and_skeletons.gperf
+
+  It is generated by running make_top_domain_list and checked in.
+  No command line argument needs to be passed.
+
+  When ICU is updated to a new major version, this file needs to be regenerated
+  because skeletons can be different in different ICU versions.
+
+  $ ninja -C $build_outdir make_top_domain_gperf
+  $ $build_outdir/make_top_domain_gperf
+
+  During a build, it is processed by net/tools/dafsa/make_dafsa.py to generate
+  alexa_names_and_skeletons-inc.cc that is included by
+  components/url_formatter/url_formatter.cc