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

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_hover_state_unittest.mm

 // Copyright (c) 2012 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>
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_hover_state.h"
-#import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
+#import "chrome/browser/ui/cocoa/test/cocoa_test_helper.h"
 
 namespace {
 
 class BookmarkBarFolderHoverStateTest : public CocoaTest {
 };
 
 // Hover state machine interface.
 // A strict call order is implied with these calls.  It is ONLY valid to make
 // these specific state transitions.
 TEST_F(BookmarkBarFolderHoverStateTest, HoverState) {
@@ skipping 53 matching lines @@
         FROM_HERE, run_loop.QuitWhenIdleClosure(),
         base::TimeDelta::FromMilliseconds(bookmarks::kDragHoverCloseDelay *
                                           1000.0 * 1.5));
     run_loop.Run();
     ASSERT_EQ(kHoverStateClosed, [bbfhs hoverState]);
     ASSERT_EQ(nil, [bbfhs hoverButton]);
   }
 }
 
 }  // namespace