Roll GN from 55ad154c..dfcbc6fe

Generated by //tools/gn/

    dfcbc6fe [xcode] Fix detection of XCTests by Xcode 12.0+
    55e535a6 Remove `set_sources_assignment_filter` function
    8fe02009 Add "else" to the list of gn keyword
    d7cf6238 Address readme feedback.
    ef13fe92 Change python to python3
    09c9e5ee Fix some typos
    335dd456 Fix build for riscv64 arch
    94bda7cc Reword command format error messages
    5f30bbf9 Add more README documentation.

Bug: 1018739, 1174473, 1071055, 1103230
Change-Id: I7af4db983f6a3ade9e667bf4ec9a55387655b7f1
Auto-Submit: Sylvain Defresne <>
Commit-Queue: Dirk Pranke <>
Reviewed-by: Dirk Pranke <>
Cr-Commit-Position: refs/heads/master@{#852251}
GitOrigin-RevId: 32b629e77d005e642367b11e1f31edc5a1d73110
1 file changed