[Sheriff] Disable ContextMenuBrowserTest.GifImageDownscaleToJpeg

Test is flaky on CrOS

TBR=reillyg@chromium.org

Bug: 1113835
Change-Id: Id7079fe52a1b35c8c5293db42bf9dccf0c4bd156
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2341151Reviewed-by: Fabio Tirelo <ftirelo@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Fabio Tirelo <ftirelo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795601}

chrome/browser/renderer_context_menu/render_view_context_menu_browsertest.cc

@@ -1531,7 +1531,13 @@ IN_PROC_BROWSER_TEST_F(ContextMenuBrowserTest, GifImageShare) {
       gfx::Size(276, 110), gfx::Size(276, 110), ".gif");
 }
 
-IN_PROC_BROWSER_TEST_F(ContextMenuBrowserTest, GifImageDownscaleToJpeg) {
+#if defined(OS_CHROMEOS)
+// TODO(http://crbug.com/1113835): flaky on ChromeOS.
+#define MAYBE_GifImageDownscaleToJpeg DISABLED_GifImageDownscaleToJpeg
+#else
+#define MAYBE_GifImageDownscaleToJpeg GifImageDownscaleToJpeg
+#endif
+IN_PROC_BROWSER_TEST_F(ContextMenuBrowserTest, MAYBE_GifImageDownscaleToJpeg) {
   OpenImagePageAndContextMenu("/google/logo.gif");
   RequestImageAndVerifyResponse(
       gfx::Size(100, 100), chrome::mojom::ImageFormat::ORIGINAL,