Add getGlobalPolicy to networkingPrivate API.

extensions/browser/api/networking_private/networking_private_api.cc

Index: extensions/browser/api/networking_private/networking_private_api.cc
diff --git a/extensions/browser/api/networking_private/networking_private_api.cc b/extensions/browser/api/networking_private/networking_private_api.cc
index d8f30697ba3ad6182cd15781b0ece92e1d05b914..5bfc42bd84eaff1c42a689290eb0cddcb8f1f316 100644
--- a/extensions/browser/api/networking_private/networking_private_api.cc
+++ b/extensions/browser/api/networking_private/networking_private_api.cc
@@ -779,4 +779,24 @@ void NetworkingPrivateSetCellularSimStateFunction::Failure(
   SendResponse(false);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// NetworkingPrivateGetGlobalPolicyFunction
+
+NetworkingPrivateGetGlobalPolicyFunction::
+    ~NetworkingPrivateGetGlobalPolicyFunction() {}
+
+ExtensionFunction::ResponseAction
+NetworkingPrivateGetGlobalPolicyFunction::Run() {
+  std::unique_ptr<base::DictionaryValue> policy_dict(
+      GetDelegate(browser_context())->GetGlobalPolicy());
+  DCHECK(policy_dict);
+  // private_api::GlobalPolicy is a subset of the global policy dictionary
+  // (by definition), so use the api setter/getter to generate the subset.
+  std::unique_ptr<private_api::GlobalPolicy> policy(
+      private_api::GlobalPolicy::FromValue(*policy_dict));
+  DCHECK(policy);
+  return RespondNow(
+      ArgumentList(private_api::GetGlobalPolicy::Results::Create(*policy)));
+}
+
 }  // namespace extensions