Updating Material Design Fonts

This page describes the process for updating the material design icons:

1. Use git to clone https://github.com/google/material-design-icons and https://github.com/google/fonts
2. Create a fonts.zip file to upload to Google Storage:

    STAGING=/tmp/fonts_staging
    mkdir $STAGING
    cp material-design-icons/iconfont/{MaterialIcons-Regular.ttf,codepoints} $STAGING
    cp material-design-icons/LICENSE $STAGING/MaterialIcons_LICENSE
    cp fonts/apache/roboto/*.ttf $STAGING
    cp fonts/apache/roboto/LICENSE.txt $STAGING/Roboto_LICENSE.txt
    cp fonts/apache/robotocondensed/*.ttf $STAGING
    cp fonts/apache/robotocondensed/LICENSE.txt $STAGING/RobotoCondensed_LICENSE.txt
    zip -j fonts.zip $STAGING/*

3. Upload fonts.zip to Google Storage:
4. Determine the sha1sum of fonts.zip. By convention, we store the fonts at a location based on the sha1sum of the fonts.zip file, which you can determine as follows: sha1sum fonts.zip
5. gsutil cp fonts.zip gs://flutter_infra/flutter/fonts/<sha1>/fonts.zip
6. Update flutter.git to refer to the new fonts:
7. Update bin/cache/material_fonts.version to reference the location of the new fonts.zip.
8. Update packages/flutter/lib/src/material/icons.dart to reference the code point for any new icons. The codepoints file that you included in fonts.zip describes the code points that exist in that version of the font. Ideally we would have a script to automagically generate icons.dart from the codepoints file, but for now we're just doing it by hand. (Note: you can diff the new codepoints file with the old one to see what's changed.)