Turn on UCONFIG_NO_NON_HTML5_CONVERTER to save 100kB

README.chromium

 Name: icu
 URL: http://site.icu-project.org/
 Version: 52.1
 License: MIT
 Security Critical: yes
 
 Description:
 This directory contains the source code of ICU 52.1 for C/C++
 
 1. It was obtained with the following:
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   - converters.patch :
      a. revises existing mapping tables
      b. Remove a lot of unused aliases in the converter alias table
         (source/data/mappings/convrtrs.txt ) leading to 40kB size reduction.
 
   - Add source/data/mappings/ucmlocal.txt : to list only converters we need.
   - Add three new tables per WHATWG encoding standards for EUC-JP,
     Shift_JIS and CP866.
     They're generated with scripts/{eucjp, sjis, ibm866}_gen.sh.
-  - Add three 'fake' tables for ISO-2022-CN(-Ext) : noop-*.ucm.
 
   - uconv.patch
-    a. ucnv2022 uses 3 fake tables for ISO-2022-CN(-Ext) instead of two
-       huge tables.
-    b. ISO-2022-JP-[1-4] is dropped.
-    c. SCSU, BOCU, ISCII, UTF-7 conversion is diabled leading to
-       the 47kB reduction in the code size.
+    a. ISO-2022-JP-[1-4] is dropped.
+    b. SCSU, BOCU, ISCII, UTF-7, LMB, ibm42*, ISO-2022-{KR,CN*} and HZ-GB  :
+       converters and detectors are dropped leading to the ~100kB reduction
+       in the code size.
+
 
 5. Locale changes
   - patches/locale1.patch :
       a. Exemplar character set changes for zh*, ja + 9 Indian locales
       b. Minor fixes for Korean, a few Indic (AmPmMarkers) and
       others (datetime format)
 
   - Locale build configuration files: To include the full locale data
     for Chrome's UI languages and the minimum locale data for other locales,
     add reslocal.mk or {trns,sprep,rbnf,coll}local.mk files to
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       f. Copy that icudt52.dll to ${CHROME_ICU_ROOT}/windows/icudt.dll
          and check that in.
 
 
 10. Change export of U_ICUDATA_ENTRY_POINT from U_IMPORT to U_EXPORT.
     - patches/declspec.patch
 
 11. Cherry-pick an upstream patch to fix a bug in bidi.
     - patches/bidi.patch
     - upstream bug : http://bugs.icu-project.org/trac/ticket/11054