Using ui::test::EventGenerator

ui/views/style/platform_style_mac.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.
 
 #include "ui/views/style/platform_style.h"
 
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/gfx/vector_icons.h"
 #include "ui/resources/grit/ui_resources.h"
@@ skipping 19 matching lines @@
     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
     return *rb.GetImageSkiaNamed(IDR_MENU_DROPARROW);
   }
   const int kComboboxArrowWidth = 13;
   return gfx::CreateVectorIcon(gfx::VectorIconId::COMBOBOX_ARROW_MAC,
                                kComboboxArrowWidth,
                                is_enabled ? SK_ColorWHITE : SK_ColorBLACK);
 }
 
 // static
+const bool PlatformStyle::kTextfieldDragVerticallyDragsToEnd = true;
+
+// static
 scoped_ptr<FocusableBorder> PlatformStyle::CreateComboboxBorder() {
   return make_scoped_ptr(new FocusableRoundedBorder);
 }
 
 // static
 scoped_ptr<Background> PlatformStyle::CreateComboboxBackground() {
   return make_scoped_ptr(new ComboboxBackgroundMac);
 }
 
 // static
@@ skipping 28 matching lines @@
 void PlatformStyle::ApplyLabelButtonTextStyle(
     views::Label* label,
     ButtonColorByState* color_by_state) {
   const ui::NativeTheme* theme = label->GetNativeTheme();
   ButtonColorByState& colors = *color_by_state;
   colors[Button::STATE_PRESSED] =
       theme->GetSystemColor(ui::NativeTheme::kColorId_ButtonHighlightColor);
 }
 
 }  // namespace views