[Mac] Use the new {EXPECT,ASSERT}_NS{EQ,NE} macros where possible.

chrome/browser/cocoa/location_bar/selected_keyword_decoration_unittest.mm

 // Copyright (c) 2010 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 <Cocoa/Cocoa.h>
 
 #import "chrome/browser/cocoa/location_bar/selected_keyword_decoration.h"
 
 #import "chrome/browser/cocoa/cocoa_test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#import "testing/gtest_mac.h"
 
 namespace {
 
 // A wide width which should fit everything.
 const CGFloat kWidth(300.0);
 
 // A narrow width for tests which test things that don't fit.
 const CGFloat kNarrowWidth(5.0);
 
 }  // namespace
@@ skipping 13 matching lines @@
 
   const std::wstring kKeyword(L"Engine");
   NSString* const kFullString = @"Search Engine:";
   NSString* const kPartialString = @"Search En\u2026:";  // ellipses
 
   decoration_.SetKeyword(kKeyword, false);
 
   // Wide width chooses the full string and image.
   const CGFloat all_width = decoration_.GetWidthForSpace(kWidth);
   EXPECT_TRUE(decoration_.image_);
-  EXPECT_TRUE([decoration_.label_ isEqualToString:kFullString]);
+  EXPECT_NSEQ(kFullString, decoration_.label_);
 
   // If not enough space to include the image, uses exactly the full
   // string.
   const CGFloat full_width = decoration_.GetWidthForSpace(all_width - 5.0);
   EXPECT_LT(full_width, all_width);
   EXPECT_FALSE(decoration_.image_);
-  EXPECT_TRUE([decoration_.label_ isEqualToString:kFullString]);
+  EXPECT_NSEQ(kFullString, decoration_.label_);
 
   // Narrow width chooses the partial string.
   const CGFloat partial_width = decoration_.GetWidthForSpace(kNarrowWidth);
   EXPECT_LT(partial_width, full_width);
   EXPECT_FALSE(decoration_.image_);
-  EXPECT_TRUE([decoration_.label_ isEqualToString:kPartialString]);
+  EXPECT_NSEQ(kPartialString, decoration_.label_);
 
   // Narrow doesn't choose partial string if there is not one.
   decoration_.partial_string_.reset();
   decoration_.GetWidthForSpace(kNarrowWidth);
   EXPECT_FALSE(decoration_.image_);
-  EXPECT_TRUE([decoration_.label_ isEqualToString:kFullString]);
+  EXPECT_NSEQ(kFullString, decoration_.label_);
 }