Remove pointless InProcessBrowserTest calls.

chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/strings/pattern.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 32 matching lines @@
   void SetUpOnMainThread() override {
     ASSERT_FALSE(GetTaskManagerMac());
     host_resolver()->AddRule("*", "127.0.0.1");
     ASSERT_TRUE(embedded_test_server()->Start());
   }
 
   void TearDownOnMainThread() override {
     // Make sure the task manager is closed (if any).
     chrome::HideTaskManager();
     ASSERT_FALSE(GetTaskManagerMac());
-
-    InProcessBrowserTest::TearDownOnMainThread();
   }
 
   TaskManagerMac* GetTaskManagerMac() const {
     return TaskManagerMac::GetInstanceForTests();
   }
 
   NSTableView* GetTable() const {
     return GetTaskManagerMac() ? [GetTaskManagerMac()->CocoaControllerForTests()
                                          tableViewForTesting]
                                : nullptr;
@@ skipping 229 matching lines @@
   // tabs[2] should still be selected.
   EXPECT_EQ(TableFirstSelectedRow(), FindRowForTab(tabs[2]));
 
   // Close tabs[0]. The selection should not change.
   chrome::CloseWebContents(browser(), tabs[0], false);
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows((rows -= 1), pattern));
   EXPECT_EQ(TableFirstSelectedRow(), FindRowForTab(tabs[2]));
 }
 
 }  // namespace task_manager