Add best-effort/allow rollback flags on WorkItem.

chrome/installer/util/work_item_list_unittest.cc

Index: chrome/installer/util/work_item_list_unittest.cc
diff --git a/chrome/installer/util/work_item_list_unittest.cc b/chrome/installer/util/work_item_list_unittest.cc
index 873678ec662e51f7ecf3884ffe5b4631e2889cfe..2c4bb006fc7d11b3de4b47e52e9ade5a09e7144c 100644
--- a/chrome/installer/util/work_item_list_unittest.cc
+++ b/chrome/installer/util/work_item_list_unittest.cc
@@ -17,8 +17,8 @@ class MockWorkItem : public WorkItem {
  public:
   MockWorkItem() = default;
 
-  MOCK_METHOD0(Do, bool());
-  MOCK_METHOD0(Rollback, void());
+  MOCK_METHOD0(DoImpl, bool());
+  MOCK_METHOD0(RollbackImpl, void());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockWorkItem);
@@ -43,12 +43,12 @@ TEST(WorkItemListTest, ExecutionSuccess) {
     // Expect all three items to be done in order then undone.
     InSequence s;
 
-    EXPECT_CALL(*item1, Do()).WillOnce(Return(true));
-    EXPECT_CALL(*item2, Do()).WillOnce(Return(true));
-    EXPECT_CALL(*item3, Do()).WillOnce(Return(true));
-    EXPECT_CALL(*item3, Rollback());
-    EXPECT_CALL(*item2, Rollback());
-    EXPECT_CALL(*item1, Rollback());
+    EXPECT_CALL(*item1, DoImpl()).WillOnce(Return(true));
+    EXPECT_CALL(*item2, DoImpl()).WillOnce(Return(true));
+    EXPECT_CALL(*item3, DoImpl()).WillOnce(Return(true));
+    EXPECT_CALL(*item3, RollbackImpl());
+    EXPECT_CALL(*item2, RollbackImpl());
+    EXPECT_CALL(*item1, RollbackImpl());
   }
 
   // Add the items to the list.
@@ -74,10 +74,10 @@ TEST(WorkItemListTest, ExecutionFailAndRollback) {
     // Expect the two first work items to be done in order then undone.
     InSequence s;
 
-    EXPECT_CALL(*item1, Do()).WillOnce(Return(true));
-    EXPECT_CALL(*item2, Do()).WillOnce(Return(false));
-    EXPECT_CALL(*item2, Rollback());
-    EXPECT_CALL(*item1, Rollback());
+    EXPECT_CALL(*item1, DoImpl()).WillOnce(Return(true));
+    EXPECT_CALL(*item2, DoImpl()).WillOnce(Return(false));
+    EXPECT_CALL(*item2, RollbackImpl());
+    EXPECT_CALL(*item1, RollbackImpl());
   }
 
   // Add the items to the list.