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

chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller_unittest.mm

 // Copyright (c) 2011 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 "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/ui/browser_window.h"
-#import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_text_field.h"
+#import "chrome/browser/ui/cocoa/test/cocoa_test_helper.h"
 #include "chrome/browser/ui/find_bar/find_notification_details.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #import "ui/base/cocoa/find_pasteboard.h"
 
 // Expose private variables to make testing easier.
 @interface FindBarCocoaController(Testing)
 - (FindBarTextField*)findTextField;
 @end
 
@@ skipping 106 matching lines @@
 TEST_F(FindBarCocoaControllerTest, SettingFindTextUpdatesFindPboard) {
   NSString* const kFindText =
       @"It's not a bird, it's not a plane, it must be Dave who's on the train";
   [controller_ setFindText:kFindText selectedRange:NSMakeRange(NSNotFound, 0)];
   EXPECT_EQ(
       NSOrderedSame,
       [[[FindPasteboard sharedInstance] findText] compare:kFindText]);
 }
 
 }  // namespace