Revert of Remove installation of Chrome Frame.

chrome/installer/setup/install_worker_unittest.cc

Index: chrome/installer/setup/install_worker_unittest.cc
diff --git a/chrome/installer/setup/install_worker_unittest.cc b/chrome/installer/setup/install_worker_unittest.cc
index 9d2a2663b5a08cdf037f1867d91272effd325945..234fdcc7d2b689de2a47088aa7039f0223da8f14 100644
--- a/chrome/installer/setup/install_worker_unittest.cc
+++ b/chrome/installer/setup/install_worker_unittest.cc
@@ -530,6 +530,19 @@
                                          &work_item_list);
 }
 
+TEST_P(OldIELowRightsTests, AddCopyIELowRightsPolicyWorkItems) {
+  StrictMock<MockWorkItemList> work_item_list;
+
+  // The old elevation policy key should only be copied when there's no old
+  // value.
+  EXPECT_CALL(work_item_list,
+              AddCopyRegKeyWorkItem(root_key_, StrEq(elevation_key),
+                                    StrEq(old_elevation_key),
+                                    Eq(WorkItem::IF_NOT_PRESENT))).Times(1);
+
+  AddCopyIELowRightsPolicyWorkItems(*installer_state_.get(), &work_item_list);
+}
+
 INSTANTIATE_TEST_CASE_P(Variations, OldIELowRightsTests,
                         Combine(Bool(), Bool()));