autotestPrivate: Fix the callbacks parameter of the Desks APIs

The callbacks should be called with a single bool argument.
Using the automatically generated Create() functions made them
be called with an array of bools instead, which is not what we expect.

BUG=1016994
TEST=Run the Tast test and expect it to be able to unmarshall a bool
     from the callback.

Change-Id: I1d89de8ffcd5d78e24a9114a68f1cebb0ad6db4a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1900689Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Ahmed Fakhry <afakhry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713119}

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

@@ -3375,8 +3375,7 @@ AutotestPrivateCreateNewDeskFunction::~AutotestPrivateCreateNewDeskFunction() =
 
 ExtensionFunction::ResponseAction AutotestPrivateCreateNewDeskFunction::Run() {
   const bool success = ash::AutotestDesksApi().CreateNewDesk();
-  return RespondNow(OneArgument(
-      api::autotest_private::CreateNewDesk::Results::Create(success)));
+  return RespondNow(OneArgument(std::make_unique<base::Value>(success)));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -3399,16 +3398,14 @@ AutotestPrivateActivateDeskAtIndexFunction::Run() {
           base::BindOnce(
               &AutotestPrivateActivateDeskAtIndexFunction::OnAnimationComplete,
               this))) {
-    return RespondNow(OneArgument(
-        api::autotest_private::ActivateDeskAtIndex::Results::Create(false)));
+    return RespondNow(OneArgument(std::make_unique<base::Value>(false)));
   }
 
   return RespondLater();
 }
 
 void AutotestPrivateActivateDeskAtIndexFunction::OnAnimationComplete() {
-  Respond(OneArgument(
-      api::autotest_private::ActivateDeskAtIndex::Results::Create(true)));
+  Respond(OneArgument(std::make_unique<base::Value>(true)));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -3425,16 +3422,14 @@ AutotestPrivateRemoveActiveDeskFunction::Run() {
   if (!ash::AutotestDesksApi().RemoveActiveDesk(base::BindOnce(
           &AutotestPrivateRemoveActiveDeskFunction::OnAnimationComplete,
           this))) {
-    return RespondNow(OneArgument(
-        api::autotest_private::RemoveActiveDesk::Results::Create(false)));
+    return RespondNow(OneArgument(std::make_unique<base::Value>(false)));
   }
 
   return RespondLater();
 }
 
 void AutotestPrivateRemoveActiveDeskFunction::OnAnimationComplete() {
-  Respond(OneArgument(
-      api::autotest_private::RemoveActiveDesk::Results::Create(true)));
+  Respond(OneArgument(std::make_unique<base::Value>(true)));
 }
 
 ///////////////////////////////////////////////////////////////////////////////