Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/policy_handlers_unittest.cc

Index: chrome/browser/extensions/policy_handlers_unittest.cc
diff --git a/chrome/browser/extensions/policy_handlers_unittest.cc b/chrome/browser/extensions/policy_handlers_unittest.cc
index 03228edaa6a8503be7bcd064de230d68f09edee7..a3d9e006c7a8c74b528606705956564c827d86f9 100644
--- a/chrome/browser/extensions/policy_handlers_unittest.cc
+++ b/chrome/browser/extensions/policy_handlers_unittest.cc
@@ -321,9 +321,10 @@ TEST(ExtensionURLPatternListPolicyHandlerTest, ApplyPolicySettings) {
 
 TEST(ExtensionSettingsPolicyHandlerTest, CheckPolicySettings) {
   std::string error;
-  scoped_ptr<base::Value> policy_value = base::JSONReader::ReadAndReturnError(
-      kTestManagementPolicy1,
-      base::JSONParserOptions::JSON_ALLOW_TRAILING_COMMAS, NULL, &error);
+  std::unique_ptr<base::Value> policy_value =
+      base::JSONReader::ReadAndReturnError(
+          kTestManagementPolicy1,
+          base::JSONParserOptions::JSON_ALLOW_TRAILING_COMMAS, NULL, &error);
   ASSERT_TRUE(policy_value.get()) << error;
 
   policy::Schema chrome_schema =
@@ -345,9 +346,10 @@ TEST(ExtensionSettingsPolicyHandlerTest, CheckPolicySettings) {
 
 TEST(ExtensionSettingsPolicyHandlerTest, ApplyPolicySettings) {
   std::string error;
-  scoped_ptr<base::Value> policy_value = base::JSONReader::ReadAndReturnError(
-      kTestManagementPolicy2,
-      base::JSONParserOptions::JSON_ALLOW_TRAILING_COMMAS, NULL, &error);
+  std::unique_ptr<base::Value> policy_value =
+      base::JSONReader::ReadAndReturnError(
+          kTestManagementPolicy2,
+          base::JSONParserOptions::JSON_ALLOW_TRAILING_COMMAS, NULL, &error);
   ASSERT_TRUE(policy_value.get()) << error;
 
   policy::Schema chrome_schema =