Disable flaky ZoomDecorationTest

TBR=tapted@chromium.org

Bug: 887811
Change-Id: I0ea74b31942f50ad2f3ffc463de60f48060f1639
Reviewed-on: https://chromium-review.googlesource.com/1237865Reviewed-by: anthonyvd <anthonyvd@chromium.org>
Commit-Queue: anthonyvd <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593183}

chrome/browser/ui/cocoa/location_bar/zoom_decoration_browsertest.mm

@@ -88,7 +88,8 @@ class ZoomDecorationTest : public InProcessBrowserTest,
   DISALLOW_COPY_AND_ASSIGN(ZoomDecorationTest);
 };
 
-IN_PROC_BROWSER_TEST_P(ZoomDecorationTest, BubbleAtDefaultZoom) {
+// TODO(crbug.com/887811): Re-enable after deflaking
+IN_PROC_BROWSER_TEST_P(ZoomDecorationTest, DISABLED_BubbleAtDefaultZoom) {
 }
 
 // Regression test for https://crbug.com/462482.