ConstructAboutInformation unittest: Move away from deprecated version

ConstructAboutInformation_DEPRECATED() is ... deprecated. This CL
moves the ConstructAboutInformation unittest away from using it, which
is trivial.

Bug: 783144
Change-Id: Ie492afe35dba907e556870b799bcb58ac094a7b7
Reviewed-on: https://chromium-review.googlesource.com/769008Reviewed-by: Nicolas Zea <zea@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517817}

components/sync/driver/about_sync_util_unittest.cc

@@ -34,9 +34,8 @@ class SyncServiceMock : public FakeSyncService {
 TEST(SyncUIUtilTestAbout, ConstructAboutInformationWithUnrecoverableErrorTest) {
   SyncServiceMock service;
 
-  std::unique_ptr<base::DictionaryValue> strings(
-      ConstructAboutInformation_DEPRECATED(&service,
-                                           version_info::Channel::UNKNOWN));
+  std::unique_ptr<base::DictionaryValue> strings(ConstructAboutInformation(
+      &service, AccountInfo(), version_info::Channel::UNKNOWN));
 
   EXPECT_TRUE(strings->HasKey("unrecoverable_error_detected"));
 }