An experimental fix for Bug 49590....

chrome/browser/cocoa/notifications/balloon_controller_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.
 
 #include "base/scoped_nsobject.h"
 #include "chrome/browser/cocoa/browser_test_helper.h"
 #include "chrome/browser/cocoa/cocoa_test_helper.h"
 #include "chrome/browser/cocoa/notifications/balloon_controller.h"
 #include "chrome/browser/notifications/balloon.h"
 #include "chrome/browser/notifications/balloon_collection.h"
@@ skipping 60 matching lines @@
   BalloonController* controller = [BalloonController alloc];
 
   id mock = [OCMockObject partialMockForObject:controller];
   [[mock expect] initializeHost];
 
   [controller initWithBalloon:balloon.get()];
   [controller showWindow:nil];
   [controller closeBalloon:YES];
 
   [mock verify];
+  [controller release];
 }
 
 TEST_F(BalloonControllerTest, SizesTest) {
   Notification n(GURL("http://www.google.com"), GURL("http://www.google.com"),
       L"http://www.google.com", ASCIIToUTF16(""),
       new NotificationObjectProxy(-1, -1, -1, false));
   scoped_ptr<Balloon> balloon(
       new Balloon(n, profile_.get(), collection_.get()));
   balloon->set_content_size(gfx::Size(100, 100));
 
   BalloonController* controller = [BalloonController alloc];
 
   id mock = [OCMockObject partialMockForObject:controller];
   [[mock expect] initializeHost];
 
   [controller initWithBalloon:balloon.get()];
 
   EXPECT_TRUE([controller desiredTotalWidth] > 100);
   EXPECT_TRUE([controller desiredTotalHeight] > 100);
   [mock verify];
+  [controller release];
 }
 
 }