Make all of our unit tests be PlatformTests to get an autorelease pool....

chrome/browser/cocoa/bookmark_button_cell_unittest.mm

 // Copyright (c) 2009 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"
 #import "chrome/browser/cocoa/bookmark_button_cell.h"
 #import "chrome/browser/cocoa/cocoa_test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
 
 namespace {
 
-class BookmarkButtonCellTest : public testing::Test {
+class BookmarkButtonCellTest : public PlatformTest {
  public:
   CocoaTestHelper cocoa_helper_;  // Inits Cocoa, creates window, etc...
   scoped_nsobject<NSButton> view_;
 };
 
 // Make sure it's not totally bogus
 TEST_F(BookmarkButtonCellTest, SizeForBounds) {
   NSRect frame = NSMakeRect(0, 0, 50, 30);
   view_.reset([[NSButton alloc] initWithFrame:frame]);
   scoped_nsobject<BookmarkButtonCell> cell([[BookmarkButtonCell alloc]
@@ skipping 23 matching lines @@
 }
 
 // Make sure the default from the base class is overridden
 TEST_F(BookmarkButtonCellTest, MouseEnterStuff) {
   scoped_nsobject<BookmarkButtonCell> cell([[BookmarkButtonCell alloc]
                                                initTextCell:@"Testing"]);
   EXPECT_TRUE([cell.get() showsBorderOnlyWhileMouseInside]);
 }
 
 }  // namespace