Disable commonName matching for certificates

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index 3b5378a626607dc41dd10fdfa47c661dc144f3fa..96cc3f46dd8dec62918065bf5ddfe85d050e8070 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -139,7 +139,7 @@
 #   persistent IDs for all fields (but not for groups!) are needed. These are
 #   specified by the 'id' keys of each policy. NEVER CHANGE EXISTING IDs,
 #   because doing so would break the deployed wire format!
-#   For your editing convenience: highest ID currently used: 365
+#   For your editing convenience: highest ID currently used: 366
 #   And don't forget to also update the EnterprisePolicies enum of
 #   histograms.xml (run tools/metrics/histograms/update_policies.py).
 #
@@ -4850,6 +4850,25 @@
       If this policy is not set, or it is set to false, then <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> follows the publicly announced SHA-1 deprecation schedule.''',
     },
     {
+      'name': 'EnableCommonNameFallbackForLocalAnchors',
+      'type': 'main',
+      'schema': { 'type': 'boolean' },
+      'supported_on': ['chrome.*:58-65', 'chrome_os:58-65', 'android:58-65'],
+      'features': {
+        'dynamic_refresh': True,
+        'per_profile': False,
+      },
+      'example_value': False,
+      'id': 366,
+      'caption': '''Whether to allow certificates issued by local trust anchors that are missing the subjectAlternativeName extension''',
+      'tags': ['system-security'],
+      'desc': '''When this setting is enabled, <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will use the commonName of a server certificate to match a hostname if the certificate is missing a subjectAlternativeName extension, as long as it successfully validates and chains to a locally-installed CA certificates.
+
+      Note that this is not recommended, as this may allow bypassing the nameConstraints extension that restricts the hostnames that a given certificate can be authorized for.
+
+      If this policy is not set, or is set to false, server certificates that lack a subjectAlternativeName extension containing either a DNS name or IP address will not be trusted.''',
+    },
+    {
       'name': 'ForceEphemeralProfiles',
       'type': 'main',
       'schema': { 'type': 'boolean' },