Create c/b/ui/cocoa/test and move test files to there

chrome/browser/ui/cocoa/omnibox/omnibox_popup_cell_unittest.mm

 // Copyright (c) 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/omnibox/omnibox_popup_cell.h"
 
 #include <stddef.h>
 
 #include "base/json/json_reader.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
-#import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
+#import "chrome/browser/ui/cocoa/test/cocoa_test_helper.h"
 #include "components/omnibox/browser/suggestion_answer.h"
 #import "testing/gtest_mac.h"
 
 namespace {
 
 class OmniboxPopupCellTest : public CocoaTest {
  public:
   OmniboxPopupCellTest() {
   }
 
@@ skipping 127 matching lines @@
   NSDictionary* lastAttributes = nil;
   NSRange range;
   NSDictionary* currentAttributes =
       [[cellData_ description] attributesAtIndex:checkValue.location
                                   effectiveRange:&range];
   EXPECT_TRUE(NSEqualRanges(checkValue, range));
   EXPECT_FALSE([currentAttributes isEqualToDictionary:lastAttributes]);
 }
 
 }  // namespace