Enable GCPW extension fetch policies task only when cloud policies feature enabled.

Bug: 1148979
Change-Id: I971194186baef5f8a2b82ef8a826f491116a102e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2538353
Commit-Queue: Robin Lewis <wrlewis@google.com>
Commit-Queue: Yusuf Sengul <yusufsn@google.com>
Reviewed-by: Yusuf Sengul <yusufsn@google.com>
Cr-Commit-Position: refs/heads/master@{#827485}

chrome/credential_provider/extension/extension_main.cc

@@ -25,9 +25,11 @@ using credential_provider::kRegEnableVerboseLogging;
 // Register all tasks for ESA with the TaskManager.
 void RegisterAllTasks() {
   // Task to fetch Cloud policies for all GCPW users.
-  credential_provider::extension::TaskManager::Get()->RegisterTask(
-      "FetchCloudPolicies",
-      credential_provider::UserPoliciesManager::GetFetchPoliciesTaskCreator());
+  if (credential_provider::UserPoliciesManager::Get()->CloudPoliciesEnabled()) {
+    credential_provider::extension::TaskManager::Get()->RegisterTask(
+        "FetchCloudPolicies", credential_provider::UserPoliciesManager::
+                                  GetFetchPoliciesTaskCreator());
+  }
 
   // Task to Upload device details.
   if (credential_provider::GemDeviceDetailsManager::Get()