Instant Extended: Delete unused overlay code

chrome/browser/ui/cocoa/tab_contents/overlay_separator_view_unittest.mm

-// 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.
-
-#import "chrome/browser/ui/cocoa/tab_contents/overlay_separator_view.h"
-
-#include "base/mac/scoped_nsobject.h"
-#import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
-
-class OverlayBottomSeparatorViewTest : public CocoaTest {
- public:
-  OverlayBottomSeparatorViewTest() {
-    NSView* contentView = [test_window() contentView];
-    bottom_view_.reset([[OverlayBottomSeparatorView alloc]
-        initWithFrame:[contentView bounds]]);
-    [contentView addSubview:bottom_view_];
-  }
-
- protected:
-  base::scoped_nsobject<OverlayBottomSeparatorView> bottom_view_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OverlayBottomSeparatorViewTest);
-};
-
-TEST_VIEW(OverlayBottomSeparatorViewTest, bottom_view_);
-
-TEST_F(OverlayBottomSeparatorViewTest, PreferredHeight) {
-  EXPECT_LT(0, [OverlayBottomSeparatorView preferredHeight]);
-}
-
-class OverlayTopSeparatorViewTest : public CocoaTest {
- public:
-  OverlayTopSeparatorViewTest() {
-    NSView* contentView = [test_window() contentView];
-    top_view_.reset(
-        [[OverlayTopSeparatorView alloc] initWithFrame:[contentView bounds]]);
-    [contentView addSubview:top_view_];
-  }
-
- protected:
-  base::scoped_nsobject<OverlayTopSeparatorView> top_view_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OverlayTopSeparatorViewTest);
-};
-
-TEST_VIEW(OverlayTopSeparatorViewTest, top_view_);
-
-TEST_F(OverlayTopSeparatorViewTest, PreferredHeight) {
-  EXPECT_LT(0, [OverlayTopSeparatorView preferredHeight]);
-}