[s13n] Convert c/b/policy/cloud/cloud_policy_browsertest.cc to Identity Service

BUG=903873

Change-Id: I42f35c394e36350c0bd88c8131edc64b2e6d677f
Reviewed-on: https://chromium-review.googlesource.com/c/1351159Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#611551}

chrome/browser/policy/cloud/cloud_policy_browsertest.cc

@@ -71,9 +71,10 @@
 #else
 #include "chrome/browser/net/system_network_context_manager.h"
 #include "chrome/browser/policy/cloud/user_cloud_policy_manager_factory.h"
-#include "chrome/browser/signin/signin_manager_factory.h"
+#include "chrome/browser/signin/identity_manager_factory.h"
 #include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
-#include "components/signin/core/browser/signin_manager.h"
+#include "services/identity/public/cpp/identity_manager.h"
+#include "services/identity/public/cpp/identity_test_utils.h"
 #endif
 
 using testing::AnyNumber;
@@ -101,12 +102,6 @@ std::unique_ptr<KeyedService> BuildFakeProfileInvalidationProvider(
           IdentityManagerFactory::GetForProfile(profile)));
 }
 
-#if !defined(OS_CHROMEOS)
-const char* GetTestGaiaId() {
-  return "gaia-id-user@example.com";
-}
-#endif
-
 const char* GetTestUser() {
 #if defined(OS_CHROMEOS)
   return user_manager::kStubUserEmail;
@@ -223,10 +218,10 @@ class CloudPolicyTest : public InProcessBrowserTest,
 #else
     // Mock a signed-in user. This is used by the UserCloudPolicyStore to pass
     // the username to the UserCloudPolicyValidator.
-    SigninManager* signin_manager =
-        SigninManagerFactory::GetForProfile(browser()->profile());
-    ASSERT_TRUE(signin_manager);
-    signin_manager->SetAuthenticatedAccountInfo(GetTestGaiaId(), GetTestUser());
+    auto* identity_manager =
+        IdentityManagerFactory::GetForProfile(browser()->profile());
+    ASSERT_TRUE(identity_manager);
+    identity::SetPrimaryAccount(identity_manager, GetTestUser());
 
     UserCloudPolicyManager* policy_manager =
         UserCloudPolicyManagerFactory::GetForBrowserContext(