Support JIS B5 and JIS B4 page sizes

Add support for the values "jis-b5" and "jis-b4" in the "size" property
of the "@page" rule, as specified in the CSS standard:

These values represent two Japanese standard paper sizes:
  - JIS B5 is 182mm wide by 257mm high
  - JIS-B4 is 257mm wide by 364mm high

Test: printing/page-format-data.html

Bug: 1047642
Change-Id: Iec39bb535d21ea5a6ee1696b744166e1247be35f
Reviewed-by: Rune Lillesveen <>
Reviewed-by: Eric Willigers <>
Commit-Queue: Rune Lillesveen <>
Cr-Commit-Position: refs/heads/master@{#743031}
9 files changed