Use base::JSONReader::ReadToValueDeprecated() in c/b/chromeos/policy/.

This is part of the process to help migrate
base::JSONReader::ReadToValue() to return base::Optional<base::Value>.

BUG=925165

Change-Id: I7754b1631a14bd3a30782fbbbb542e5cec897f0e
Reviewed-on: https://chromium-review.googlesource.com/c/1474515
Auto-Submit: Lei Zhang <thestig@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632827}

chrome/browser/chromeos/policy/remote_commands/device_command_screenshot_job.cc

@@ -130,7 +130,7 @@ void DeviceCommandScreenshotJob::OnFailure(UploadJob::ErrorCode error_code) {
 bool DeviceCommandScreenshotJob::ParseCommandPayload(
     const std::string& command_payload) {
   std::unique_ptr<base::Value> root(
-      base::JSONReader().ReadToValue(command_payload));
+      base::JSONReader().ReadToValueDeprecated(command_payload));
   if (!root.get())
     return false;
   base::DictionaryValue* payload = nullptr;

chrome/browser/chromeos/policy/remote_commands/device_command_set_volume_job.cc

@@ -35,7 +35,7 @@ enterprise_management::RemoteCommand_Type DeviceCommandSetVolumeJob::GetType()
 bool DeviceCommandSetVolumeJob::ParseCommandPayload(
     const std::string& command_payload) {
   std::unique_ptr<base::Value> root(
-      base::JSONReader().ReadToValue(command_payload));
+      base::JSONReader().ReadToValueDeprecated(command_payload));
   if (!root.get())
     return false;
   base::DictionaryValue* payload = nullptr;

chrome/browser/chromeos/policy/remote_commands/device_command_start_crd_session_job.cc

@@ -139,7 +139,7 @@ DeviceCommandStartCRDSessionJob::GetType() const {
 bool DeviceCommandStartCRDSessionJob::ParseCommandPayload(
     const std::string& command_payload) {
   std::unique_ptr<base::Value> root(
-      base::JSONReader().ReadToValue(command_payload));
+      base::JSONReader().ReadToValueDeprecated(command_payload));
   if (!root)
     return false;
   if (!root->is_dict())