base: Remove the string logging from CHECK().

chrome/browser/chromeos/login/supervised/supervised_user_test_base.cc

Index: chrome/browser/chromeos/login/supervised/supervised_user_test_base.cc
diff --git a/chrome/browser/chromeos/login/supervised/supervised_user_test_base.cc b/chrome/browser/chromeos/login/supervised/supervised_user_test_base.cc
index 15dc5ac1a5a9465da3443d5316bfc57066e20229..a2f8c9f5856f74d7ecb6697da8d988d0cb7dce25 100644
--- a/chrome/browser/chromeos/login/supervised/supervised_user_test_base.cc
+++ b/chrome/browser/chromeos/login/supervised/supervised_user_test_base.cc
@@ -73,8 +73,8 @@ std::unique_ptr<::sync_pb::ManagedUserSpecifics>
 SupervisedUsersSyncTestAdapter::GetFirstChange() {
   std::unique_ptr<::sync_pb::ManagedUserSpecifics> result(
       new ::sync_pb::ManagedUserSpecifics);
-  CHECK(HasChanges())
-      << "GetFirstChange() should only be callled if HasChanges() is true";
+  // GetFirstChange() should only be callled if HasChanges() is true
+  CHECK(HasChanges());
   const syncer::SyncData& data = processor_->changes().front().sync_data();
   EXPECT_EQ(syncer::SUPERVISED_USERS, data.GetDataType());
   result->CopyFrom(data.GetSpecifics().managed_user());
@@ -122,8 +122,8 @@ std::unique_ptr<::sync_pb::ManagedUserSharedSettingSpecifics>
 SupervisedUsersSharedSettingsSyncTestAdapter::GetFirstChange() {
   std::unique_ptr<::sync_pb::ManagedUserSharedSettingSpecifics> result(
       new ::sync_pb::ManagedUserSharedSettingSpecifics);
-  CHECK(HasChanges())
-      << "GetFirstChange() should only be callled if HasChanges() is true";
+  // GetFirstChange() should only be callled if HasChanges() is true
+  CHECK(HasChanges());
   const syncer::SyncData& data = processor_->changes().front().sync_data();
   EXPECT_EQ(syncer::SUPERVISED_USER_SHARED_SETTINGS, data.GetDataType());
   result->CopyFrom(data.GetSpecifics().managed_user_shared_setting());