Record Chromium merge at DEPS revision r216972

This commit was generated by merge_to_master.py.

Change-Id: I596494890e2b5f0f42401921aecac37d93d6a3e8
diff --git a/.merged-revisions b/.merged-revisions
index bdc6c8c..2c43a00 100644
--- a/.merged-revisions
+++ b/.merged-revisions
@@ -17,3 +17,4 @@
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