Disable CrashHandlerTest.UnrelatedException on Mac

TBR=gayane@chromium.org
NOTRY=true

Bug: 971247
Change-Id: If2170d68287e5021e25986cc4dd875ca864c53fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1645812Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666275}

components/gwp_asan/crash_handler/crash_handler_unittest.cc

@@ -357,7 +357,12 @@ TEST_P(CrashHandlerTest, MAYBE_DISABLED(MissingMetadata)) {
   EXPECT_TRUE(proto_.has_region_size());
 }
 
-TEST_P(CrashHandlerTest, MAYBE_DISABLED(UnrelatedException)) {
+#if defined(OS_MACOSX)
+#define MAYBE_UnrelatedException DISABLED_UnrelatedException
+#else
+#define MAYBE_UnrelatedException UnrelatedException
+#endif
+TEST_P(CrashHandlerTest, MAYBE_DISABLED(MAYBE_UnrelatedException)) {
   ASSERT_FALSE(gwp_asan_found_);
 }