Migrate [] to proto imports.
Migrate [] to proto imports.

GITHUB_BREAKING_CHANGES=N/A

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=322870348

google/closure-templates,yext/closure-templates,yext/closure-templates,yext/closure-templates,google/closure-templates,google/closure-templates,google/closure-templates,google/closure-templates,yext/closure-templates