Temporarily disabled tests failing on 10.8, when running on 10.8.

chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm b/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
index 504cda28e3847a8f7f4cf31139fc33b999a3f31d..fb9a67cff7835a43603525e48b3b4069fc8a64de 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
@@ -295,6 +295,10 @@ IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest, ZOrderNormalInstant) {
 // non-Instant presentation mode.
 IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest,
                        ZOrderInstantPresentationMode) {
+  // TODO(kbr): re-enable: http://crbug.com/222296
+  if (base::mac::IsOSMountainLionOrLater())
+    return;
+
   chrome::ToggleFullscreenMode(browser());
   ShowInstantResults();
   browser()->GetFindBarController();  // add find bar
@@ -314,6 +318,10 @@ IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest,
 // then calling |updateSubviewZOrder:| will correctly move back above.
 IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest,
                        FloatingBarBelowContentView) {
+  // TODO(kbr): re-enable: http://crbug.com/222296
+  if (base::mac::IsOSMountainLionOrLater())
+    return;
+
   chrome::ToggleFullscreenMode(browser());
 
   NSView* fullscreen_floating_bar =
@@ -363,6 +371,10 @@ IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest, ContentOffset) {
 // the info bar.
 IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest,
                        ContentOffsetPresentationMode) {
+  // TODO(kbr): re-enable: http://crbug.com/222296
+  if (base::mac::IsOSMountainLionOrLater())
+    return;
+
   chrome::ToggleFullscreenMode(browser());
   OverlayableContentsController* overlay =
       [controller() overlayableContentsController];