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

chrome/browser/ui/cocoa/run_loop_testing_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 "chrome/browser/ui/cocoa/run_loop_testing.h"
-
-#import <Foundation/Foundation.h>
-
-#include "base/mac/scoped_nsobject.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-@interface TestDelayed : NSObject {
- @private
-  BOOL didWork_;
-  TestDelayed* next_;
-}
-@property(readonly, nonatomic) BOOL didWork;
-@property(assign, nonatomic) TestDelayed* next;
-@end
-
-@implementation TestDelayed
-@synthesize didWork = didWork_;
-@synthesize next = next_;
-
-- (id)init {
-  if ((self = [super init])) {
-    [self performSelector:@selector(doWork) withObject:nil afterDelay:0];
-  }
-  return self;
-}
-
-- (void)doWork {
-  didWork_ = YES;
-  [next_ performSelector:@selector(doWork) withObject:nil afterDelay:0];
-}
-@end
-
-TEST(RunLoopTesting, RunAllPending) {
-  base::scoped_nsobject<TestDelayed> tester([[TestDelayed alloc] init]);
-  EXPECT_FALSE([tester didWork]);
-
-  chrome::testing::NSRunLoopRunAllPending();
-
-  EXPECT_TRUE([tester didWork]);
-}
-
-TEST(RunLoopTesting, NestedWork) {
-  base::scoped_nsobject<TestDelayed> tester([[TestDelayed alloc] init]);
-  base::scoped_nsobject<TestDelayed> nested([[TestDelayed alloc] init]);
-  [tester setNext:nested];
-
-  EXPECT_FALSE([tester didWork]);
-  EXPECT_FALSE([nested didWork]);
-
-  chrome::testing::NSRunLoopRunAllPending();
-
-  EXPECT_TRUE([tester didWork]);
-  EXPECT_TRUE([nested didWork]);
-}