tree a31b02778bfcffb11d5d9c0b0d73b26bd7ac896e
parent b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e
author Googler <rosica@google.com> 1565354578 -0700
committer Copybara-Service <copybara-worker@google.com> 1565354602 -0700

Allow the C++ toolchain config rules comparator script to not need toolchain_identifier argument when both --before and --after arguments are CToolchains (coming from Starlark rules instead of CROSSTOOL proto)

We don't need to select a toolchain by the identifier when we get the proto from Starlark rules because in that case the proto contains a single toolchain.
The difference in toolchain_identifier field between the first and the second proto file will be caught as any other field.

RELNOTES: None.
PiperOrigin-RevId: 262543753
Change-Id: I1e66ee302bf551ade883c217f6269f44382393c0