Update autotest_private to use new Policy Conversions.

Enable device info and device local account policy.

Pretty print, policy type conversion and user policies are enabled by
default. Policy value conversion is disabled by default.

Also update the documentation of extension api definition.

Bug: 983174
Change-Id: I20747c3b607e41dfd364d6488bb83acd65204d1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1757124
Auto-Submit: Owen Min <zmin@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687661}

chrome/browser/chromeos/extensions/autotest_private/autotest_private_api.cc

@@ -521,10 +521,11 @@ ExtensionFunction::ResponseAction
 AutotestPrivateGetAllEnterprisePoliciesFunction::Run() {
   DVLOG(1) << "AutotestPrivateGetAllEnterprisePoliciesFunction";
 
-  base::Value all_policies_array = policy::GetAllPolicyValuesAsDictionary(
-      browser_context(), true /* with_user_policies */,
-      false /* convert_values */, true /* with_device_data */,
-      false /* pretty_print */, true /* convert_types */);
+  base::Value all_policies_array = policy::DictionaryPolicyConversions()
+                                       .WithBrowserContext(browser_context())
+                                       .EnableDeviceLocalAccountPolicies(true)
+                                       .EnableDeviceInfo(true)
+                                       .ToValue();
 
   return RespondNow(OneArgument(
       base::Value::ToUniquePtrValue(std::move(all_policies_array))));

chrome/common/extensions/api/autotest_private.idl

@@ -104,7 +104,7 @@ namespace autotestPrivate {
   callback LoginStatusCallback = void (LoginStatusDict status);
 
   // |all_policies| will be the full list of policies as returned by the
-  // GetAllPolicyValuesAsArray function.
+  // DictionaryPolicyConversions.ToValue function.
   callback AllEnterprisePoliciesCallback = void (any all_policies);
 
   dictionary ExtensionInfoDict {