Move the Mac Task Manager to the new backend code.

chrome/browser/ui/views/new_task_manager_view_browsertest.cc

Index: chrome/browser/ui/views/new_task_manager_view_browsertest.cc
diff --git a/chrome/browser/ui/views/new_task_manager_view_browsertest.cc b/chrome/browser/ui/views/new_task_manager_view_browsertest.cc
index d5b56b0e4d75f9fd7dec221abf0fdabe174e5c0d..950ef46e99c5ad94a08f0376ce856444dfc56640 100644
--- a/chrome/browser/ui/views/new_task_manager_view_browsertest.cc
+++ b/chrome/browser/ui/views/new_task_manager_view_browsertest.cc
@@ -226,6 +226,8 @@ IN_PROC_BROWSER_TEST_F(NewTaskManagerViewTest, InitialSelection) {
 }
 
 IN_PROC_BROWSER_TEST_F(NewTaskManagerViewTest, SelectionConsistency) {
+  ASSERT_NO_FATAL_FAILURE(ClearStoredColumnSettings());
+
   chrome::ShowTaskManager(browser());
 
   // Set up a total of three tabs in different processes.
@@ -262,6 +264,7 @@ IN_PROC_BROWSER_TEST_F(NewTaskManagerViewTest, SelectionConsistency) {
   // Select the middle row, and store its tab id.
   GetTable()->Select(FindRowForTab(tabs[1]));
   EXPECT_EQ(GetTable()->FirstSelectedRow(), FindRowForTab(tabs[1]));
+  EXPECT_EQ(1, GetTable()->SelectedRowCount());
 
   // Add 3 rows above the selection. The selected tab should not change.
   for (int i = 0; i < 3; ++i) {
@@ -270,6 +273,7 @@ IN_PROC_BROWSER_TEST_F(NewTaskManagerViewTest, SelectionConsistency) {
   }
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows((rows += 3), pattern));
   EXPECT_EQ(GetTable()->FirstSelectedRow(), FindRowForTab(tabs[1]));
+  EXPECT_EQ(1, GetTable()->SelectedRowCount());
 
   // Add 2 rows below the selection. The selected tab should not change.
   for (int i = 0; i < 2; ++i) {
@@ -278,6 +282,7 @@ IN_PROC_BROWSER_TEST_F(NewTaskManagerViewTest, SelectionConsistency) {
   }
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows((rows += 2), pattern));
   EXPECT_EQ(GetTable()->FirstSelectedRow(), FindRowForTab(tabs[1]));
+  EXPECT_EQ(1, GetTable()->SelectedRowCount());
 
   // Add a new row in the same process as the selection. The selected tab should
   // not change.