Added emaxx@ as policy OWNER

BUG=none

Review-Url: https://codereview.chromium.org/2677683002
Cr-Commit-Position: refs/heads/master@{#448007}

chrome/browser/chromeos/policy/OWNERS

 bartfab@chromium.org
 atwilson@chromium.org
+emaxx@chromium.org
 tnagel@chromium.org
 pastarmovj@chromium.org

chrome/browser/policy/OWNERS

 bartfab@chromium.org
 atwilson@chromium.org
 tnagel@chromium.org
+emaxx@chromium.org
 pastarmovj@chromium.org

components/policy/OWNERS

 bartfab@chromium.org
 atwilson@chromium.org
 tnagel@chromium.org
+emaxx@chromium.org
 pastarmovj@chromium.org

components/policy/resources/OWNERS

@@ -7,6 +7,7 @@
 # https://sites.google.com/a/chromium.org/dev/developers/how-tos/enterprise/adding-new-policies
 per-file policy_templates.json=set noparent
 per-file policy_templates.json=atwilson@chromium.org
+per-file policy_templates.json=emaxx@chromium.org
 per-file policy_templates.json=bartfab@chromium.org
 per-file policy_templates.json=tnagel@chromium.org
 per-file policy_templates.json=pastarmovj@chromium.org