I'm writing CLs that are unrelated to iOS, like https://crrev.com/c/797677 and https://crrev.com/c/794171 . The ios-simulator trybot keeps dying:

ERROR at //v8/BUILD.gn:126:7: Duplicate build argument declaration.
      [ "//test/cctest/test-experimental-extra.js" ]
      ^--------------------------------------------
Here you're declaring an argument that was already declared elsewhere.
You can only declare each argument once in the entire build so there is one
canonical place for documentation and the default value. Either move this
argument to the build config file (for visibility everywhere) or to a .gni file
that you "import" from the files where you need it (preferred).
See //ios/BUILD.gn:15:41: Previous declaration.
  v8_experimental_extra_library_files = []
                                        ^
See also "gn help buildargs" for more on how build arguments work.
See //content/public/common/BUILD.gn:43:22: which caused the file to be included.
  public_configs = [ "//v8:external_startup_data" ]
                     ^---------------------------
GN gen failed: 1

This is extremely problematic. For example, on https://crrev.com/c/794171, ios-simulator has failed SIX TIMES in a row, and is blocking landing.

Searching for this text yields https://crrev.com/c/561922. kmilka@ is gone, so assigning to a reviewer.