Mac Bookmarks hover unit tests leak.

chrome/browser/cocoa/bookmark_bar_folder_hover_state_unittest.mm

 // Copyright (c) 2010 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.h"
 #import "chrome/browser/cocoa/bookmark_bar_controller.h"
 #import "chrome/browser/cocoa/bookmark_bar_folder_hover_state.h"
 #import "chrome/browser/cocoa/browser_test_helper.h"
@@ skipping 13 matching lines @@
 
   // Initial state.
   EXPECT_FALSE([bbfhs hoverButton]);
   ASSERT_EQ(kHoverStateClosed, [bbfhs hoverState]);
 
   scoped_nsobject<BookmarkButton> button;
   button.reset([[BookmarkButton alloc] initWithFrame:NSMakeRect(0, 0, 20, 20)]);
 
   // Test transition from closed to opening.
   ASSERT_EQ(kHoverStateClosed, [bbfhs hoverState]);
-  [bbfhs scheduleOpenBookmarkFolderOnHoverButton:[button retain]];
+  [bbfhs scheduleOpenBookmarkFolderOnHoverButton:button];
   ASSERT_EQ(kHoverStateOpening, [bbfhs hoverState]);
 
   // Test transition from opening to closed (aka cancel open).
   [bbfhs cancelPendingOpenBookmarkFolderOnHoverButton];
   ASSERT_EQ(kHoverStateClosed, [bbfhs hoverState]);
   ASSERT_EQ(nil, [bbfhs hoverButton]);
 
   // Test transition from closed to opening.
   ASSERT_EQ(kHoverStateClosed, [bbfhs hoverState]);
-  [bbfhs scheduleOpenBookmarkFolderOnHoverButton:[button retain]];
+  [bbfhs scheduleOpenBookmarkFolderOnHoverButton:button];
   ASSERT_EQ(kHoverStateOpening, [bbfhs hoverState]);
 
   // Test transition from opening to opened.
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       new MessageLoop::QuitTask,
       bookmarks::kDragHoverOpenDelay * 1000.0 * 1.5);
   MessageLoop::current()->Run();
   ASSERT_EQ(kHoverStateOpen, [bbfhs hoverState]);
   ASSERT_EQ(button, [bbfhs hoverButton]);
@@ skipping 13 matching lines @@
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       new MessageLoop::QuitTask,
       bookmarks::kDragHoverCloseDelay * 1000.0 * 1.5);
   MessageLoop::current()->Run();
   ASSERT_EQ(kHoverStateClosed, [bbfhs hoverState]);
   ASSERT_EQ(nil, [bbfhs hoverButton]);
 }
 
 }  // namespace