DevTools: disable the Chrome tab debugging warning for force-installed extensions.

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 13d4e1f38db9668f78185d5a173ed9d2e3a4f410..7323a5770c1a5742f1f312ccf138701954e53e0b 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -9597,6 +9597,25 @@
 
       If this policy is set to a list of input method identifiers, the given input methods will be available on the sign-in screen. The first given input method will be preselected. While a user pod is focused on the sign-in screen, the user's least recently used input method will be available in addition to the input methods given by this policy.  If this policy is not set, the input methods on the sign-in screen will be derived from the locale in which the sign-in screen is displayed.  Values which are not valid input method identifiers will be ignored.''',
     },
+    {
+      'name': 'DeveloperToolsSilentManagedDebuggerAPIEnabled',
+      'type': 'main',
+      'schema': { 'type': 'boolean' },
+      'supported_on': ['chrome.*:58-', 'chrome_os:58-'],
+      'features': {
+        'dynamic_refresh': True,
+        'per_profile': True,
+      },
+      'example_value': False,
+      'id': 366,
+      'caption': '''Enable Developer Tools silent <ph name="CHROME_DEBUGGER_API">chrome.debugger<ex>chrome.debugger</ex></ph> extensions API for force-installed extensions''',
+      'tags': ['system-security'],
+      'desc': '''Enables force-installed extensions to instrument the browser without the user-visible warning.
+
+      If this policy is set, force-installed browser extensions will be able to attach to the browser and instrument it without a user-visible warning.

[Thiemo Nagel, 2017/02/22 17:15:10]

Nit: set --> set to true

[pfeldman, 2017/02/22 18:17:43]

Done.

+
+      If this policy is unset (default), a user-visible warning shows up upon establishing new debugging sessions.'''

[Thiemo Nagel, 2017/02/22 17:15:10]

Nit: unset (default) --> false or unset

[pfeldman, 2017/02/22 18:17:43]

Done.

+    },
   ],
   'messages': {
     # Messages that are not associated to any policies.