Indirect input deps for imported proto is now handled by deps in
proto_library template, so we don't need to use proto_data_sources
anymore after https://crrev.com/c/5919027.
To remove proto_data_sources from proto_library template, let me clean
up proto_data_sources usages from this repository.
Bug: chromium:366137880
Change-Id: I288a30004f7d622be502477a0567b00d19432e89
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/366060
Auto-Submit: Takuto Ikuta <tikuta@google.com>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Henrik Andreassson <henrika@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#43261}
337f6f2f93