Convert CloudDeviceDescription to use base::JSONReader::Read

Bug: 925165
Change-Id: Idcd84485128c8239d3cd811bf0309e1c3c2b8c0c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1736353
Commit-Queue: Lei Zhang <thestig@chromium.org>
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#684113}

components/cloud_devices/common/cloud_device_description.cc

@@ -22,11 +22,11 @@ CloudDeviceDescription::CloudDeviceDescription()
 CloudDeviceDescription::~CloudDeviceDescription() = default;
 
 bool CloudDeviceDescription::InitFromString(const std::string& json) {
-  std::unique_ptr<base::Value> value = base::JSONReader::ReadDeprecated(json);
+  base::Optional<base::Value> value = base::JSONReader::Read(json);
   if (!value)
     return false;
 
-  return InitFromValue(base::Value::FromUniquePtrValue(std::move(value)));
+  return InitFromValue(std::move(*value));
 }
 
 bool CloudDeviceDescription::InitFromValue(base::Value ticket) {