Sheriff: Disable flaky test InputImeApiTest.SendKeyEventsOnNormalPage on Windows and Linux

TBR=shuchen@chromium.org
TBR=keithlee@chromium.org
TBR=azurewei@chromium.org

Bug: 1004628
Change-Id: Ifc892a0f640dab2e7fc910e2b921f1eb7393640e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1807643Reviewed-by: Fergus Dall <sidereal@google.com>
Cr-Commit-Position: refs/heads/master@{#697090}

chrome/browser/ui/views/ime/input_ime_apitest_nonchromeos.cc

@@ -108,7 +108,13 @@ IN_PROC_BROWSER_TEST_F(InputImeApiTest, DISABLED_BasicApiTest) {
   input_method->DetachTextInputClient(client2.get());
 }
 
-IN_PROC_BROWSER_TEST_F(InputImeApiTest, SendKeyEventsOnNormalPage) {
+// TODO(crbug.com/1004628) Flakes on Windows and Linux
+#if defined(OS_WIN) || defined(OS_LINUX)
+#define MAYBE_SendKeyEventsOnNormalPage DISABLED_SendKeyEventsOnNormalPage
+#else
+#define MAYBE_SendKeyEventsOnNormalPage SendKeyEventsOnNormalPage
+#endif
+IN_PROC_BROWSER_TEST_F(InputImeApiTest, MAYBE_SendKeyEventsOnNormalPage) {
   // Navigates to special page that sendKeyEvents API has limition with.
   ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUINewTabURL));
   // Manipulates the focused text input client because the follow cursor