Mac: Disable TestOnMouseOut, it requires more automation provider support than there is atm.

chrome/test/interactive_ui/mouseleave_interactive_uitest.cc

Index: chrome/test/interactive_ui/mouseleave_interactive_uitest.cc
diff --git a/chrome/test/interactive_ui/mouseleave_interactive_uitest.cc b/chrome/test/interactive_ui/mouseleave_interactive_uitest.cc
index a735c8eeb7a725a0fe4ef877834ad728396fc7f7..41458c3227d1414ab00ef807ee049e261c44ce8c 100644
--- a/chrome/test/interactive_ui/mouseleave_interactive_uitest.cc
+++ b/chrome/test/interactive_ui/mouseleave_interactive_uitest.cc
@@ -24,7 +24,13 @@ class MouseLeaveTest : public UITest {
   DISALLOW_COPY_AND_ASSIGN(MouseLeaveTest);
 };
 
-TEST_F(MouseLeaveTest, TestOnMouseOut) {
+#if defined(OS_MACOSX)
+// Missing automation provider support: http://crbug.com/45892
+#define MAYBE_TestOnMouseOut FAILS_TestOnMouseOut
+#else
+#define MAYBE_TestOnMouseOut TestOnMouseOut
+#endif
+TEST_F(MouseLeaveTest, MAYBE_TestOnMouseOut) {
   GURL test_url = ui_test_utils::GetTestUrl(
       FilePath(FilePath::kCurrentDirectory),
       FilePath(FILE_PATH_LITERAL("mouseleave.html")));