convert //gpu to std::unique_ptr

gpu/config/gpu_control_list_entry_unittest.cc

Index: gpu/config/gpu_control_list_entry_unittest.cc
diff --git a/gpu/config/gpu_control_list_entry_unittest.cc b/gpu/config/gpu_control_list_entry_unittest.cc
index 91504c188db53726535b2e2bdcb6adefcda1d7a5..f26e3acd5d5b99a01fa503250aef414b0d58fe0f 100644
--- a/gpu/config/gpu_control_list_entry_unittest.cc
+++ b/gpu/config/gpu_control_list_entry_unittest.cc
@@ -4,6 +4,8 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/json/json_reader.h"
 #include "gpu/config/gpu_control_list.h"
 #include "gpu/config/gpu_info.h"
@@ -32,7 +34,7 @@ class GpuControlListEntryTest : public testing::Test {
 
   static ScopedEntry GetEntryFromString(
       const std::string& json, bool supports_feature_type_all) {
-    scoped_ptr<base::Value> root = base::JSONReader::Read(json);
+    std::unique_ptr<base::Value> root = base::JSONReader::Read(json);
     base::DictionaryValue* value = NULL;
     if (!root || !root->GetAsDictionary(&value))
       return NULL;