Update appearance of omnibox focus for MD.

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac_unittest.mm

 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 75 matching lines @@
 class TestingOmniboxEditController : public ChromeOmniboxEditController {
  public:
   explicit TestingOmniboxEditController(ToolbarModel* toolbar_model)
       : ChromeOmniboxEditController(NULL), toolbar_model_(toolbar_model) {}
   ~TestingOmniboxEditController() override {}
 
  protected:
   // Overridden from ChromeOmniboxEditController:
   void UpdateWithoutTabRestore() override {}
   void OnChanged() override {}
-  void OnSetFocus() override {}
   void ShowURL() override {}
   ToolbarModel* GetToolbarModel() override { return toolbar_model_; }
   const ToolbarModel* GetToolbarModel() const override {
     return toolbar_model_;
   }
   content::WebContents* GetWebContents() override { return nullptr; }
 
  private:
   ToolbarModel* toolbar_model_;
 
@@ skipping 90 matching lines @@
 
   // With popup open verify that pressing up and down arrow works.
   popup_view.set_is_open(true);
   model->set_up_or_down_count(0);
   view.OnDoCommandBySelector(@selector(moveDown:));
   EXPECT_EQ(1, model->up_or_down_count());
   model->set_up_or_down_count(0);
   view.OnDoCommandBySelector(@selector(moveUp:));
   EXPECT_EQ(-1, model->up_or_down_count());
 }