Document deprecated plugin policies as such.

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 1317 matching lines @@
       If you enable this setting or do not set a value, AutoFill will remain under the control of the user. This will allow them to configure AutoFill profiles and to switch AutoFill on or off at their own discretion.''',
     },
     {
       'name': 'DisabledPlugins',
       'type': 'list',
       'schema': {
         'type': 'array',
         'items': { 'type': 'string' },
       },
       'supported_on': ['chrome.*:8-', 'chrome_os:11-'],
+      'deprecated': True,
       'features': {
         'dynamic_refresh': True,
         'per_profile': True,
       },
       'example_value': ['Java', 'Shockwave Flash', 'Chrome PDF Viewer'],
       'id': 19,
       'caption': '''Specify a list of disabled plugins''',
       'tags': [],
-      'desc': '''Specifies a list of plugins that are disabled in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> and prevents users from changing this setting.
+      'desc': '''This policy is deprecated. Please use the <ph name="DEFAULT_PLUGINS_SETTING_POLICY">$1<ex>DefaultPluginsSetting</ex></ph> to control the avalability of the Flash plugin and <ph name="ALWAYS_OPEN_PDF_EXTERNALLY_POLICY">$1<ex>AlwaysOpenPdfExternally</ex></ph> to control whether the integrated PDF viewer should be used for opening PDF files.
+
+      Specifies a list of plugins that are disabled in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> and prevents users from changing this setting.
 
       The wildcard characters '*' and '?' can be used to match sequences of arbitrary characters. '*' matches an arbitrary number of characters while '?' specifies an optional single character, i.e. matches zero or one characters. The escape character is '\\', so to match actual '*', '?', or '\\' characters, you can put a '\\' in front of them.
 
       If you enable this setting, the specified list of plugins is never used in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>. The plugins are marked as disabled in 'about:plugins' and users cannot enable them.
 
       Note that this policy can be overridden by EnabledPlugins and DisabledPluginsExceptions.
 
       If this policy is left not set the user can use any plugin installed on the system except for hard-coded incompatible, outdated or dangerous plugins.''',
       'label': '''List of disabled plugins''',
     },
     {
       'name': 'EnabledPlugins',
       'type': 'list',
       'schema': {
         'type': 'array',
         'items': { 'type': 'string' },
       },
       'supported_on': ['chrome.*:11-', 'chrome_os:11-'],
+      'deprecated': True,
       'features': {
         'dynamic_refresh': True,
         'per_profile': True,
       },
       'example_value': ['Java', 'Shockwave Flash', 'Chrome PDF Viewer'],
       'id': 78,
       'caption': '''Specify a list of enabled plugins''',
       'tags': ['system-security'],
-      'desc': '''Specifies a list of plugins that are enabled in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> and prevents users from changing this setting.
+      'desc': '''This policy is deprecated. Please use the <ph name="DEFAULT_PLUGINS_SETTING_POLICY">$1<ex>DefaultPluginsSetting</ex></ph> to control the avalability of the Flash plugin and <ph name="ALWAYS_OPEN_PDF_EXTERNALLY_POLICY">$1<ex>AlwaysOpenPdfExternally</ex></ph> to control whether the integrated PDF viewer should be used for opening PDF files.
+
+      Specifies a list of plugins that are enabled in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> and prevents users from changing this setting.
 
       The wildcard characters '*' and '?' can be used to match sequences of arbitrary characters. '*' matches an arbitrary number of characters while '?' specifies an optional single character, i.e. matches zero or one characters. The escape character is '\\', so to match actual '*', '?', or '\\' characters, you can put a '\\' in front of them.
 
       The specified list of plugins is always used in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> if they are installed. The plugins are marked as enabled in 'about:plugins' and users cannot disable them.
 
       Note that this policy overrides both DisabledPlugins and DisabledPluginsExceptions.
 
       If this policy is left not set the user can disable any plugin installed on the system.''',
       'label': '''List of enabled plugins''',
     },
     {
       'name': 'DisabledPluginsExceptions',
       'type': 'list',
       'schema': {
         'type': 'array',
         'items': { 'type': 'string' },
       },
       'supported_on': ['chrome.*:11-', 'chrome_os:11-'],
+      'deprecated': True,
       'features': {
         'dynamic_refresh': True,
         'per_profile': True,
       },
       'example_value': ['Java', 'Shockwave Flash', 'Chrome PDF Viewer'],
       'id': 79,
       'caption': '''Specify a list of plugins that the user can enable or disable''',
       'tags': [],
-      'desc': '''Specifies a list of plugins that user can enable or disable in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>.
+      'desc': '''This policy is deprecated. Please use the <ph name="DEFAULT_PLUGINS_SETTING_POLICY">$1<ex>DefaultPluginsSetting</ex></ph> to control the avalability of the Flash plugin and <ph name="ALWAYS_OPEN_PDF_EXTERNALLY_POLICY">$1<ex>AlwaysOpenPdfExternally</ex></ph> to control whether the integrated PDF viewer should be used for opening PDF files.
+
+      Specifies a list of plugins that user can enable or disable in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>.
 
       The wildcard characters '*' and '?' can be used to match sequences of arbitrary characters. '*' matches an arbitrary number of characters while '?' specifies an optional single character, i.e. matches zero or one characters. The escape character is '\\', so to match actual '*', '?', or '\\' characters, you can put a '\\' in front of them.
 
       If you enable this setting, the specified list of plugins can be used in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>. Users can enable or disable them in 'about:plugins', even if the plugin also matches a pattern in DisabledPlugins. Users can also enable and disable plugins that don't match any patterns in DisabledPlugins, DisabledPluginsExceptions and EnabledPlugins.
 
       This policy is meant to allow for strict plugin blacklisting where the 'DisabledPlugins' list contains wildcarded entries like disable all plugins '*' or disable all Java plugins '*Java*' but the administrator wishes to enable some particular version like 'IcedTea Java 2.3'. This particular versions can be specified in this policy.
 
       Note that both the plugin name and the plugin's group name have to be exempted. Each plugin group is shown in a separate section in about:plugins; each section may have one or more plugins. For example, the "Shockwave Flash" plugin belongs to the "Adobe Flash Player" group, and both names have to have a match in the exceptions list if that plugin is to be exempted from the blacklist.
 
       If this policy is left not set any plugin that matches the patterns in the 'DisabledPlugins' will be locked disabled and the user won't be able to enable them.''',
@@ skipping 7764 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">https://www.chromium.org/administrators/complex-policies-on-windows<ex>https://www.chromium.org/administrators/complex-policies-on-windows</ex></ph>''',
     },
   },
   'placeholders': [],
 }