Revert of Fix handling of device cloud signing policy key rotation

chromeos/dbus/fake_session_manager_client.cc

Index: chromeos/dbus/fake_session_manager_client.cc
diff --git a/chromeos/dbus/fake_session_manager_client.cc b/chromeos/dbus/fake_session_manager_client.cc
index 594ecdc43e4201a5b8833719f684e0c6c92c04e2..5cc0066993b5bb057dabf2bc36887fbe31e0aeb7 100644
--- a/chromeos/dbus/fake_session_manager_client.cc
+++ b/chromeos/dbus/fake_session_manager_client.cc
@@ -5,43 +5,13 @@
 #include "chromeos/dbus/fake_session_manager_client.h"
 
 #include "base/bind.h"
-#include "base/files/file_path.h"
-#include "base/files/file_util.h"
 #include "base/location.h"
-#include "base/numerics/safe_conversions.h"
-#include "base/path_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "chromeos/chromeos_paths.h"
 #include "chromeos/dbus/cryptohome_client.h"
-#include "components/policy/proto/device_management_backend.pb.h"
 
 namespace chromeos {
-
-namespace {
-
-// Store the owner key in a file on the disk, so that it can be loaded by
-// DeviceSettingsService and used e.g. for validating policy signatures in the
-// integration tests. This is done on behalf of the real session manager, that
-// would be managing the owner key file on Chrome OS.
-bool StoreOwnerKey(const std::string& public_key) {
-  base::FilePath owner_key_path;
-  DCHECK(base::PathService::Get(FILE_OWNER_KEY, &owner_key_path));
-  if (!base::CreateDirectory(owner_key_path.DirName())) {
-    LOG(ERROR) << "Failed to create the directory for the owner key file";
-    return false;
-  }
-  if (base::WriteFile(owner_key_path, public_key.c_str(),
-                      public_key.length()) !=
-      base::checked_cast<int>(public_key.length())) {
-    LOG(ERROR) << "Failed to store the owner key file";
-    return false;
-  }
-  return true;
-}
-
-}  // namespace
 
 FakeSessionManagerClient::FakeSessionManagerClient()
     : start_device_wipe_call_count_(0),
@@ -151,27 +121,11 @@
 void FakeSessionManagerClient::StoreDevicePolicy(
     const std::string& policy_blob,
     const StorePolicyCallback& callback) {
-  enterprise_management::PolicyFetchResponse policy;
-  if (!policy.ParseFromString(policy_blob)) {
-    LOG(ERROR) << "Unable to parse policy protobuf";
-    base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(callback, false /* success */));
-    return;
-  }
-
-  bool owner_key_store_success = false;
-  if (policy.has_new_public_key())
-    owner_key_store_success = StoreOwnerKey(policy.new_public_key());
   device_policy_ = policy_blob;
-
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE, base::Bind(callback, true /* success */));
-  if (policy.has_new_public_key()) {
-    for (auto& observer : observers_)
-      observer.OwnerKeySet(owner_key_store_success);
-  }
+  base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
+                                                base::Bind(callback, true));
   for (auto& observer : observers_)
-    observer.PropertyChangeComplete(true /* success */);
+    observer.PropertyChangeComplete(true);
 }
 
 void FakeSessionManagerClient::StorePolicyForUser(