Sheriff: Disable SpellcheckServiceBrowserTest.CustomDictionaryChanged test.

Disable it on Win ASAN only.

TBR=groby@chromium.org

Bug: 1051777
Change-Id: I950c3301391d3c34c611eb40f768a5aae9f4c1a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2053265Reviewed-by: Alexey Baskakov <loyso@chromium.org>
Commit-Queue: Alexey Baskakov <loyso@chromium.org>
Cr-Commit-Position: refs/heads/master@{#740983}

chrome/browser/spellchecker/spellcheck_service_browsertest.cc

@@ -382,7 +382,15 @@ IN_PROC_BROWSER_TEST_F(SpellcheckServiceBrowserTest, StartWithoutSpellcheck) {
 
 // A custom dictionary state change should send a 'custom dictionary changed'
 // message to the renderer, regardless of the spellcheck enabled state.
-IN_PROC_BROWSER_TEST_F(SpellcheckServiceBrowserTest, CustomDictionaryChanged) {
+//
+// TODO(crbug.com/1051777): Flaky on ASAN Win bot.
+#if defined(OS_WIN) && defined(ADDRESS_SANITIZER)
+#define MAYBE_CustomDictionaryChanged DISABLED_CustomDictionaryChanged
+#else
+#define MAYBE_CustomDictionaryChanged CustomDictionaryChanged
+#endif
+IN_PROC_BROWSER_TEST_F(SpellcheckServiceBrowserTest,
+                       MAYBE_CustomDictionaryChanged) {
   InitSpellcheck(true, "en-US", "");
   EXPECT_TRUE(GetEnableSpellcheckState());