Clean up unused grit header includes in ui/.

ui/base/cocoa/three_part_image_unittest.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/base/cocoa/three_part_image.h"
 
 #include <memory>
 
 #include "testing/gtest_mac.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkRect.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_unittest_util.h"
 #import "ui/gfx/test/ui_cocoa_test_helper.h"
-#include "ui/resources/grit/ui_resources.h"
 
 namespace ui {
 namespace test {
 
 TEST(ThreePartImageTest, GetRects) {
   const int kHeight = 11;
   const int kLeftWidth = 3;
   const int kMiddleWidth = 5;
   const int kRightWidth = 7;
   base::scoped_nsobject<NSImage> leftImage(
@@ skipping 48 matching lines @@
 
   // The corners are transparent.
   EXPECT_FALSE(image.HitTest(NSMakePoint(0, 0), bounds));
   EXPECT_FALSE(image.HitTest(NSMakePoint(0, size - 1), bounds));
   EXPECT_FALSE(image.HitTest(NSMakePoint(4 * size - 1, 0), bounds));
   EXPECT_FALSE(image.HitTest(NSMakePoint(4 * size - 1, size - 1), bounds));
 }
 
 }  // namespace test
 }  // namespace ui