Several builders started to fail after https://chrome-internal.googlesource.com/chrome/src-internal/+/3da34e6311d2d874c6d9028a163125b56b89bc28 was submitted:

https://build.chromium.org/p/chromium.mac/builders/ios-device/builds/69527
/b/build/slave/ios-device/build/src/buildtools/mac/gn gen //out/Release-iphoneos --check
  -> returned 1
ERROR at //ios/web/shell/BUILD.gn:7:1: Can't load input file.
import("//mojo/public/tools/bindings/mojom.gni")
^----------------------------------------------


https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Linux%20x64/builds/22179
/b/c/b/Google_Chrome_Linux_x64/src/buildtools/linux64/gn gen //out/Release --check
  -> returned 1
ERROR at //BUILD.gn:163:7: Can't load input file.
      "//mojo",
      ^-------
Unable to load:
  /b/c/b/Google_Chrome_Linux_x64/src/mojo/BUILD.gn
I also checked in the secondary tree for:
  /b/c/b/Google_Chrome_Linux_x64/src/build/secondary/mojo/BUILD.gn
GN gen failed: 1
step returned non-zero exit code: 1


For the reland - please make sure to run trybots when making such large-affecting changes.