Remove DialogDelegate::UseNewStyle and unused code.

ui/views/window/dialog_delegate_unittest.cc

 // Copyright 2013 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/strings/utf_string_conversions.h"
 #include "ui/base/hit_test.h"
 #include "ui/views/bubble/bubble_border.h"
 #include "ui/views/bubble/bubble_frame_view.h"
 #include "ui/views/controls/button/button_dropdown.h"
 #include "ui/views/controls/button/checkbox.h"
@@ skipping 186 matching lines @@
   dialog()->CheckAndResetStates(true, false, NULL);
 }
 
 TEST_F(DialogTest, RemoveDefaultButton) {
   // Removing buttons from the dialog here should not cause a crash on close.
   delete dialog()->GetDialogClientView()->ok_button();
   delete dialog()->GetDialogClientView()->cancel_button();
 }
 
 TEST_F(DialogTest, HitTest) {
-  if (!DialogDelegate::UseNewStyle())
-    return;
-
   // Ensure that the new style's BubbleFrameView hit-tests as expected.
   const NonClientView* view = dialog()->GetWidget()->non_client_view();
   BubbleFrameView* frame = static_cast<BubbleFrameView*>(view->frame_view());
   const int border = frame->bubble_border()->GetBorderThickness();
 
   struct {
     const int point;
     const int hit;
   } cases[] = {
     { border,      HTSYSMENU },
     { border + 10, HTSYSMENU },
     { border + 20, HTCAPTION },
     { border + 40, HTCLIENT  },
     { border + 50, HTCLIENT  },
     { 1000,        HTNOWHERE },
   };
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
     gfx::Point point(cases[i].point, cases[i].point);
     EXPECT_EQ(cases[i].hit, frame->NonClientHitTest(point))
         << " with border: " << border << ", at point " << cases[i].point;
   }
 }
 
 TEST_F(DialogTest, InitialBoundsAccommodateTitle) {
-  if (!DialogDelegate::UseNewStyle())
-    return;
-
   TestDialog* titled_dialog(new TestDialog());
   titled_dialog->set_title(ASCIIToUTF16("Title"));
   DialogDelegate::CreateDialogWidget(titled_dialog, GetContext(), NULL);
 
   // Titled dialogs have taller initial frame bounds than untitled dialogs.
   EXPECT_GT(titled_dialog->GetWidget()->GetWindowBoundsInScreen().height(),
             dialog()->GetWidget()->GetWindowBoundsInScreen().height());
 
   // Giving the default test dialog a title will make the bounds the same.
   dialog()->set_title(ASCIIToUTF16("Title"));
   dialog()->GetWidget()->UpdateWindowTitle();
   View* frame = dialog()->GetWidget()->non_client_view()->frame_view();
   EXPECT_EQ(titled_dialog->GetWidget()->GetWindowBoundsInScreen().height(),
             frame->GetPreferredSize().height());
 }
 
 }  // namespace views