Make unit_tests runnable on Lion without crashing. Now tests just fail.

chrome/browser/ui/cocoa/hover_image_button_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.
 
 #import <Cocoa/Cocoa.h>
 
+#include "base/mac/mac_util.h"
 #include "base/memory/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/hover_image_button.h"
 #include "grit/theme_resources.h"
 #include "grit/theme_resources_standard.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 
 namespace {
 
 class HoverImageButtonTest : public CocoaTest {
  public:
   HoverImageButtonTest() {
     NSRect content_frame = [[test_window() contentView] frame];
     scoped_nsobject<HoverImageButton> button(
         [[HoverImageButton alloc] initWithFrame:content_frame]);
     button_ = button.get();
     [[test_window() contentView] addSubview:button_];
   }
 
   virtual void SetUp() {
     CocoaTest::BootstrapCocoa();
+
+    // This test crashes when run on Lion. Fail early.
+    if (base::mac::IsOSLionOrLater()) {
+      FAIL() << "This test crashes on Lion; http://crbug.com/93926";
+    }
   }
 
   HoverImageButton* button_;
 };
 
 // Test mouse events.
 TEST_F(HoverImageButtonTest, ImageSwap) {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   NSImage* image = rb.GetNativeImageNamed(IDR_HOME);
   NSImage* hover = rb.GetNativeImageNamed(IDR_BACK);
@@ skipping 19 matching lines @@
 
   [button_ mouseEntered:nil];
   [button_ drawRect:[button_ frame]];
   EXPECT_EQ([button_ alphaValue], 1.0);
   [button_ mouseExited:nil];
   [button_ drawRect:[button_ frame]];
   EXPECT_EQ([button_ alphaValue], 0.5);
 }
 
 }  // namespace