mac: Remove IsOSLion().

chrome/browser/ui/browser_browsertest.cc

Index: chrome/browser/ui/browser_browsertest.cc
diff --git a/chrome/browser/ui/browser_browsertest.cc b/chrome/browser/ui/browser_browsertest.cc
index be237af4bff517cf9a48cef8e4e658a886e14f1c..35d907e5ec1ed3466a417335a95c1f521d8f44c5 100644
--- a/chrome/browser/ui/browser_browsertest.cc
+++ b/chrome/browser/ui/browser_browsertest.cc
@@ -116,7 +116,6 @@
 #include "ui/base/page_transition_types.h"
 
 #if defined(OS_MACOSX)
-#include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "chrome/browser/ui/cocoa/run_loop_testing.h"
 #endif
@@ -2721,12 +2720,6 @@ IN_PROC_BROWSER_TEST_F(ClickModifierTest, DISABLED_HrefShiftMiddleClickTest) {
 }
 
 IN_PROC_BROWSER_TEST_F(BrowserTest, GetSizeForNewRenderView) {
-#if defined(OS_MACOSX)
-  // TODO(erikchen): This behavior has regressed on OSX 10.7 and 10.8 and should
-  // be fixed. http://crbug.com/503185
-  if (base::mac::IsOSMountainLion() || base::mac::IsOSLion())
-    return;
-#endif  // defined(OS_MACOSX)
   // The instant extended NTP has javascript that does not work with
   // ui_test_utils::NavigateToURL.  The NTP rvh reloads when the browser tries
   // to navigate away from the page, which causes the WebContents to end up in