Disable flaky FeedbackTest.ShowFeedback

Bug: 757243
Tbr: xiyuan@chromium.org
Change-Id: Icc3358ecd4970fdfba9ee7783c3ef130506e3723
Reviewed-on: https://chromium-review.googlesource.com/662083Reviewed-by: Ben Wells <benwells@chromium.org>
Commit-Queue: Ben Wells <benwells@chromium.org>
Cr-Commit-Position: refs/heads/master@{#501208}

chrome/browser/extensions/api/feedback_private/feedback_browsertest.cc

@@ -85,7 +85,14 @@ class FeedbackTest : public ExtensionBrowserTest {
   }
 };
 
-IN_PROC_BROWSER_TEST_F(FeedbackTest, ShowFeedback) {
+// Disabled for ASan due to flakiness on Mac ASan 64 Tests (1).
+// See crbug.com/757243.
+#if defined(ADDRESS_SANITIZER)
+#define MAYBE_ShowFeedback DISABLED_ShowFeedback
+#else
+#define MAYBE_ShowFeedback ShowFeedback
+#endif
+IN_PROC_BROWSER_TEST_F(FeedbackTest, MAYBE_ShowFeedback) {
   WaitForExtensionViewsToLoad();
 
   ASSERT_TRUE(IsFeedbackAppAvailable());