[Extensions UI] Remove override of toolbar redesign in many tests

chrome/browser/ui/views/toolbar/toolbar_action_view_interactive_uitest.cc

 // 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.
 
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 121 matching lines @@
 class ToolbarActionViewInteractiveUITest : public ExtensionBrowserTest {
  protected:
   ToolbarActionViewInteractiveUITest();
   ~ToolbarActionViewInteractiveUITest() override;
 
   // ExtensionBrowserTest:
   void SetUpCommandLine(base::CommandLine* command_line) override;
   void TearDownOnMainThread() override;
 
  private:
-  // Override the extensions-action-redesign switch.
-  std::unique_ptr<extensions::FeatureSwitch::ScopedOverride> feature_override_;
-
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionViewInteractiveUITest);
 };
 
 ToolbarActionViewInteractiveUITest::ToolbarActionViewInteractiveUITest() {}
 ToolbarActionViewInteractiveUITest::~ToolbarActionViewInteractiveUITest() {}
 
 void ToolbarActionViewInteractiveUITest::SetUpCommandLine(
     base::CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
-  // We do this before the rest of the setup because it can affect how the views
-  // are constructed.
-  feature_override_.reset(new extensions::FeatureSwitch::ScopedOverride(
-      extensions::FeatureSwitch::extension_action_redesign(), true));
   ToolbarActionsBar::disable_animations_for_testing_ = true;
 }
 
 void ToolbarActionViewInteractiveUITest::TearDownOnMainThread() {
   ToolbarActionsBar::disable_animations_for_testing_ = false;
 }
 
 #if defined(USE_OZONE) || defined(OS_WIN)
 // ozone bringup - http://crbug.com/401304
 // flaky on Windows - http://crbug.com/638692
@@ skipping 211 matching lines @@
   // the message loop. Wait for this all to complete.
   EXPECT_TRUE(ui_test_utils::SendKeyPressToWindowSync(
       native_window, ui::VKEY_RETURN, false, false, false, false));
   base::RunLoop().RunUntilIdle();
 
   // The menu should be closed.
   EXPECT_FALSE(app_menu_button->IsMenuShowing());
   // And the extension should have been activated.
   EXPECT_TRUE(listener.WaitUntilSatisfied());
 }