Disable KeystoneGlueTest.BasicGlobalCreate

This test is quite flaky recently:
https://analysis.chromium.org/p/chromium/flake-portal/flakes/occurrences?key=ag9zfmZpbmRpdC1mb3ItbWVyQQsSBUZsYWtlIjZjaHJvbWl1bUB1bml0X3Rlc3RzQEtleXN0b25lR2x1ZVRlc3QuQmFzaWNHbG9iYWxDcmVhdGUM

TBR=mark@chromium.org

Bug: 1041813
Change-Id: Ie6695e5da5d68b4d003032db94cc80b50c569c64
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2028854Reviewed-by: Yi Gu <yigu@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#736551}

chrome/browser/mac/keystone_glue_unittest.mm

@@ -184,7 +184,8 @@ class KeystoneGlueTest : public PlatformTest {
   base::test::TaskEnvironment task_environment_;
 };
 
-TEST_F(KeystoneGlueTest, BasicGlobalCreate) {
+// The test is flaky: crbug.com/1041813.
+TEST_F(KeystoneGlueTest, DISABLED_BasicGlobalCreate) {
   // Allow creation of a KeystoneGlue by mocking out a few calls
   SEL ids = @selector(infoDictionary);
   IMP oldInfoImp_ = [[KeystoneGlue class] instanceMethodForSelector:ids];