Update a unit test so it doesn't rely on obsolete resources.

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 "ui/base/resource/resource_bundle.h"
 #import "ui/gfx/test/ui_cocoa_test_helper.h"
+#include "ui/gfx/image/image_unittest_util.h"
 #include "ui/resources/grit/ui_resources.h"
 
 namespace ui {
 namespace test {
 
 TEST(ThreePartImageTest, GetRects) {
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+  const int kHeight = 11;
+  const int kLeftWidth = 3;
+  const int kMiddleWidth = 5;
+  const int kRightWidth = 7;
   base::scoped_nsobject<NSImage> leftImage(
-      rb.GetNativeImageNamed(IDR_BROWSER_ACTION_BADGE_LEFT).CopyNSImage());
+      gfx::test::CreateImage(kLeftWidth, kHeight).CopyNSImage());
   base::scoped_nsobject<NSImage> middleImage(
-      rb.GetNativeImageNamed(IDR_BROWSER_ACTION_BADGE_CENTER).CopyNSImage());
+      gfx::test::CreateImage(kMiddleWidth, kHeight).CopyNSImage());
   base::scoped_nsobject<NSImage> rightImage(
-      rb.GetNativeImageNamed(IDR_BROWSER_ACTION_BADGE_RIGHT).CopyNSImage());
+      gfx::test::CreateImage(kRightWidth, kHeight).CopyNSImage());
   ThreePartImage image(leftImage, middleImage, rightImage);
-  NSRect bounds = NSMakeRect(0, 0, 20, 11);
-  EXPECT_NSRECT_EQ(NSMakeRect(0, 0, 4, 11), image.GetLeftRect(bounds));
-  EXPECT_NSRECT_EQ(NSMakeRect(4, 0, 12, 11), image.GetMiddleRect(bounds));
-  EXPECT_NSRECT_EQ(NSMakeRect(16, 0, 4, 11), image.GetRightRect(bounds));
-}
+  NSRect bounds =
+      NSMakeRect(0, 0, kLeftWidth + kMiddleWidth + kRightWidth, kHeight);
+  EXPECT_NSRECT_EQ(NSMakeRect(0, 0, kLeftWidth, kHeight),
+                   image.GetLeftRect(bounds));
+  EXPECT_NSRECT_EQ(NSMakeRect(kLeftWidth, 0, kMiddleWidth, kHeight),
+                   image.GetMiddleRect(bounds));
+  EXPECT_NSRECT_EQ(
+      NSMakeRect(kLeftWidth + kMiddleWidth, 0, kRightWidth, kHeight),
+      image.GetRightRect(bounds));
 
-TEST(ThreePartImageTest, GetRectsWithoutMiddle) {
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-  base::scoped_nsobject<NSImage> leftImage(
-      rb.GetNativeImageNamed(IDR_BROWSER_ACTION_BADGE_LEFT).CopyNSImage());
-  base::scoped_nsobject<NSImage> rightImage(
-      rb.GetNativeImageNamed(IDR_BROWSER_ACTION_BADGE_RIGHT).CopyNSImage());
-  ThreePartImage image(leftImage, nullptr, rightImage);
-  NSRect bounds = NSMakeRect(0, 0, 20, 11);
-  EXPECT_NSRECT_EQ(NSMakeRect(0, 0, 4, 11), image.GetLeftRect(bounds));
-  EXPECT_NSRECT_EQ(NSMakeRect(4, 0, 12, 11), image.GetMiddleRect(bounds));
-  EXPECT_NSRECT_EQ(NSMakeRect(16, 0, 4, 11), image.GetRightRect(bounds));
+  ThreePartImage image2(leftImage, nullptr, rightImage);
+  EXPECT_NSRECT_EQ(NSMakeRect(0, 0, kLeftWidth, kHeight),
+                   image.GetLeftRect(bounds));
+  EXPECT_NSRECT_EQ(NSMakeRect(kLeftWidth, 0, kMiddleWidth, kHeight),
+                   image.GetMiddleRect(bounds));
+  EXPECT_NSRECT_EQ(
+      NSMakeRect(kLeftWidth + kMiddleWidth, 0, kRightWidth, kHeight),
+      image.GetRightRect(bounds));
 }
 
 TEST(ThreePartImageTest, HitTest) {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   base::scoped_nsobject<NSImage> leftImage(
       rb.GetNativeImageNamed(IDR_BACK_ARROW).CopyNSImage());
   base::scoped_nsobject<NSImage> rightImage(
       rb.GetNativeImageNamed(IDR_FORWARD_ARROW).CopyNSImage());
   ThreePartImage image(leftImage, nullptr, rightImage);
   NSRect bounds = NSMakeRect(0, 0, 512, 128);
 
   // The middle of the arrows are hits.
   EXPECT_TRUE(image.HitTest(NSMakePoint(64, 64), bounds));
   EXPECT_TRUE(image.HitTest(NSMakePoint(448, 64), bounds));
 
   // No middle image means the middle rect is a hit.
   EXPECT_TRUE(image.HitTest(NSMakePoint(256, 64), bounds));
 
   // The corners are transparent.
   EXPECT_FALSE(image.HitTest(NSMakePoint(0, 0), bounds));
   EXPECT_FALSE(image.HitTest(NSMakePoint(0, 127), bounds));
   EXPECT_FALSE(image.HitTest(NSMakePoint(511, 0), bounds));
   EXPECT_FALSE(image.HitTest(NSMakePoint(511, 127), bounds));
 }
 
 }  // namespace test
 }  // namespace ui