Convert //components/[u-z]* from scoped_ptr to std::unique_ptr

BUG=554298
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[email protected]

Review URL: https://codereview.chromium.org/1917673002

Cr-Commit-Position: refs/heads/master@{#389596}
diff --git a/components/version_ui/version_handler_helper.cc b/components/version_ui/version_handler_helper.cc
index 6d049a75..cc4bd94 100644
--- a/components/version_ui/version_handler_helper.cc
+++ b/components/version_ui/version_handler_helper.cc
@@ -14,7 +14,7 @@
 
 namespace version_ui {
 
-scoped_ptr<base::Value> GetVariationsList() {
+std::unique_ptr<base::Value> GetVariationsList() {
   std::vector<std::string> variations;
 #if !defined(NDEBUG)
   base::FieldTrial::ActiveGroups active_groups;
@@ -33,7 +33,7 @@
   variations::GetFieldTrialActiveGroupIdsAsStrings(&variations);
 #endif
 
-  scoped_ptr<base::ListValue> variations_list(new base::ListValue);
+  std::unique_ptr<base::ListValue> variations_list(new base::ListValue);
   for (std::vector<std::string>::const_iterator it = variations.begin();
        it != variations.end(); ++it) {
     variations_list->Append(new base::StringValue(*it));