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

chrome/browser/ui/cocoa/test/run_loop_testing.h

Index: chrome/browser/ui/cocoa/test/run_loop_testing.h
diff --git a/chrome/browser/ui/cocoa/run_loop_testing.h b/chrome/browser/ui/cocoa/test/run_loop_testing.h
similarity index 84%
rename from chrome/browser/ui/cocoa/run_loop_testing.h
rename to chrome/browser/ui/cocoa/test/run_loop_testing.h
index 5269787162b570154776b4d8edda146547caa0dc..46a45acdbb55188ba7b9df94785fad50459eb45b 100644
--- a/chrome/browser/ui/cocoa/run_loop_testing.h
+++ b/chrome/browser/ui/cocoa/test/run_loop_testing.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_UI_COCOA_RUN_LOOP_TESTING_H_
-#define CHROME_BROWSER_UI_COCOA_RUN_LOOP_TESTING_H_
+#ifndef CHROME_BROWSER_UI_COCOA_TEST_RUN_LOOP_TESTING_H_
+#define CHROME_BROWSER_UI_COCOA_TEST_RUN_LOOP_TESTING_H_
 
 namespace chrome {
 namespace testing {
@@ -26,4 +26,4 @@ void NSRunLoopRunAllPending();
 }  // namespace testing
 }  // namespace chrome
 
-#endif  // CHROME_BROWSER_UI_COCOA_RUN_LOOP_TESTING_H_
+#endif  // CHROME_BROWSER_UI_COCOA_TEST_RUN_LOOP_TESTING_H_