Refactor ViewsDelegate and MD-ify the icon-to-text spacing for checkbox and radiobutton

chrome/browser/ui/views/extensions/media_galleries_dialog_views_unittest.cc

 // Copyright 2014 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 <stdint.h>
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/media_galleries/media_galleries_dialog_controller_mock.h"
 #include "chrome/browser/ui/views/extensions/media_galleries_dialog_views.h"
 #include "chrome/browser/ui/views/extensions/media_gallery_checkbox_view.h"
 #include "components/storage_monitor/storage_info.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/views/controls/button/checkbox.h"
+#include "ui/views/test/test_views_delegate.h"
 
 using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::Mock;
 using ::testing::NiceMock;
 using ::testing::Return;
 using ::testing::ReturnPointee;
 
 namespace {
 
@@ skipping 27 matching lines @@
     Mock::VerifyAndClearExpectations(&controller_);
   }
 
   NiceMock<MediaGalleriesDialogControllerMock>* controller() {
     return &controller_;
   }
 
  private:
   // TODO(gbillock): Get rid of this mock; make something specialized.
   NiceMock<MediaGalleriesDialogControllerMock> controller_;
+  views::TestViewsDelegate views_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesDialogTest);
 };
 
 // Tests that checkboxes are initialized according to the contents of
 // permissions in the registry.
 TEST_F(MediaGalleriesDialogTest, InitializeCheckboxes) {
   MediaGalleriesDialogController::Entries attached_permissions;
   attached_permissions.push_back(
       MediaGalleriesDialogController::Entry(MakePrefInfoForTesting(1), true));
@@ skipping 82 matching lines @@
   MediaGalleryPrefInfo gallery2 = MakePrefInfoForTesting(2);
   attached_permissions.push_back(
       MediaGalleriesDialogController::Entry(gallery2, true));
   dialog.UpdateGalleries();
   EXPECT_EQ(2U, dialog.checkbox_map_.size());
 
   attached_permissions.pop_back();
   dialog.UpdateGalleries();
   EXPECT_EQ(1U, dialog.checkbox_map_.size());
 }