common-mk: Mirror protoctxt.gypi from src/platform/

protoctxt.gypi was added to src/platform/common-mk in CL:189238 but is not yet
mirrored in src/platform2/. This CL copies the file over so that shill can start
using src/platform2/common-mk build files.

BUG=chromium:363865
TEST=cros_workon_make chromeos-base/platform2 --test
     build_packages
     FEATURES=test emerge-peppy platform2

Change-Id: Ifc9b9d03795b715ba98580a9b4b3f648b9ef8653
Reviewed-on: https://chromium-review.googlesource.com/195640
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
1 file changed
tree: 5f1859ac6ec9130f692cee22f7bd2560f7693781
  1. attestation/
  2. buffet/
  3. common-mk/
  4. .gitignore
  5. LICENSE