Updated the documentation of the SafeSearch policy.

components/policy/resources/policy_templates.json

 {
 # policy_templates.json - Metafile for policy templates
 #
 # The content of this file is evaluated as a Python expression.
 #
 # This file is used as input to generate the following policy templates:
 # ADM, ADMX+ADML, MCX/plist and html documentation.
 #
 # Policy templates are user interface definitions or documents about the
 # policies that can be used to configure Chrome. Each policy is a name-value
@@ skipping 778 matching lines @@
       'schema': { 'type': 'boolean' },
       'supported_on': ['chrome.*:25-', 'chrome_os:25-', 'android:30-'],
       'features': {
         'can_be_recommended': False,
         'dynamic_refresh': True,
         'per_profile': True,
       },
       'example_value': False,
       'id': 162,
       'caption': '''Force SafeSearch''',
-      'desc': '''Forces queries in Google Web Search to be done with SafeSearch set to active and prevents users from changing this setting.
+      'desc': '''Forces queries in Google Web Search to be done with SafeSearch set to active and prevents users from changing this setting. This setting also forces Safety Mode on YouTube.
 
-      If you enable this setting, SafeSearch in Google Search is always active.
+      If you enable this setting, SafeSearch in Google Search and YouTube is always active.
 
-      If you disable this setting or do not set a value, SafeSearch in Google Search is not enforced.''',
+      If you disable this setting or do not set a value, SafeSearch in Google Search and YouTube is not enforced.''',
     },
     {
       'name': 'SafeBrowsingEnabled',
       'type': 'main',
       'schema': { 'type': 'boolean' },
       'supported_on': ['chrome.*:8-', 'chrome_os:11-', 'android:30-'],
       'features': {
         'can_be_recommended': True,
         'dynamic_refresh': True,
         'per_profile': True,
@@ skipping 5992 matching lines @@
       'desc': '''Text appended in parentheses next to the policies top-level container to indicate that those policies are of the Recommended level''',
       'text': 'Default Settings (users can override)',
     },
     'doc_complex_policies_on_windows': {
       'desc': '''Text pointing the user to a help article for complex policies on Windows''',
       'text': '''encoded as a JSON string, for details see <ph name="COMPLEX_POLICIES_URL">http://www.chromium.org/administrators/complex-policies-on-windows<ex>http://www.chromium.org/administrators/complex-policies-on-windows</ex></ph>''',
     },
   },
   'placeholders': [],
 }