Convert //components/sync_driver from scoped_ptr to std::unique_ptr

components/sync_driver/about_sync_util_unittest.cc

Index: components/sync_driver/about_sync_util_unittest.cc
diff --git a/components/sync_driver/about_sync_util_unittest.cc b/components/sync_driver/about_sync_util_unittest.cc
index 60ba5f2af15f3db852a7642f17c421a2e27ccf24..e762903e68ab1c7eddc1490a3bdf49fad463b7ce 100644
--- a/components/sync_driver/about_sync_util_unittest.cc
+++ b/components/sync_driver/about_sync_util_unittest.cc
@@ -44,9 +44,8 @@ class SyncServiceMock : public sync_driver::FakeSyncService {
 TEST(SyncUIUtilTestAbout, ConstructAboutInformationWithUnrecoverableErrorTest) {
   SyncServiceMock service;
 
-  scoped_ptr<base::DictionaryValue> strings(
-      ConstructAboutInformation(&service, NULL,
-                                version_info::Channel::UNKNOWN));
+  std::unique_ptr<base::DictionaryValue> strings(ConstructAboutInformation(
+      &service, NULL, version_info::Channel::UNKNOWN));
 
   EXPECT_TRUE(strings->HasKey("unrecoverable_error_detected"));
 }