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

chrome/browser/ui/cocoa/download/download_shelf_mac_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.
 
 #import "base/mac/scoped_nsobject.h"
-#include "chrome/browser/ui/cocoa/cocoa_profile_test.h"
 #include "chrome/browser/ui/cocoa/download/download_shelf_mac.h"
+#include "chrome/browser/ui/cocoa/test/cocoa_profile_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 // A fake implementation of DownloadShelfController. It implements only the
 // methods that DownloadShelfMac call during the tests in this file. We get this
 // class into the DownloadShelfMac constructor by some questionable casting --
 // Objective C is a dynamic language, so we pretend that's ok.
 
 @interface FakeDownloadShelfController : NSObject {
  @public
@@ skipping 75 matching lines @@
 
 TEST_F(DownloadShelfMacTest, ForwardsIsShowing) {
   DownloadShelfMac shelf(browser(),
       (DownloadShelfController*)shelf_controller_.get());
   EXPECT_EQ(0, shelf_controller_.get()->callCountIsVisible);
   shelf.IsShowing();
   EXPECT_EQ(1, shelf_controller_.get()->callCountIsVisible);
 }
 
 }  // namespace