Consistently skip OWNERS check for CQ dry run

Depends on https://codereview.chromium.org/1923623004

BUG=594127
[email protected]

Review URL: https://codereview.chromium.org/1823113002 .

Cr-Commit-Position: refs/heads/master@{#390382}
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 949e03ae..874734e 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -1054,6 +1054,9 @@
     if input_api.tbr:
       return [output_api.PresubmitNotifyResult(
           '--tbr was specified, skipping OWNERS check for DEPS additions')]
+    if input_api.dry_run:
+      return [output_api.PresubmitNotifyResult(
+          'This is a dry run, skipping OWNERS check for DEPS additions')]
     if not input_api.change.issue:
       return [output_api.PresubmitError(
           "DEPS approval by OWNERS check failed: this change has "