Disable flaky TestSetImageIfPrimaryAccountReady_UnifiedConsent on TSan

TBR=tangltom@chromium.org,pkasting@chromium.org,droger@chromium.org

Bug: 945848
Change-Id: I9045c04fb7f0875f4c0a1225502a65d9581445ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1540083Reviewed-by: Sahel Sharify <sahel@chromium.org>
Commit-Queue: Sahel Sharify <sahel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644460}

chrome/browser/ui/webui/signin/sync_confirmation_handler_unittest.cc

@@ -252,8 +252,16 @@ TEST_F(SyncConfirmationHandlerTest, TestSetImageIfPrimaryAccountReady) {
   EXPECT_EQ(picture_url_with_size.spec(), passed_picture_url);
 }
 
+// crbug.com/945848
+#if defined(THREAD_SANITIZER)
+#define MAYBE_TestSetImageIfPrimaryAccountReady_UnifiedConsent \
+  DISABLED_TestSetImageIfPrimaryAccountReady_UnifiedConsent
+#else
+#define MAYBE_TestSetImageIfPrimaryAccountReady_UnifiedConsent \
+  TestSetImageIfPrimaryAccountReady_UnifiedConsent
+#endif  // defined(THREAD_SANITIZER)
 TEST_F(SyncConfirmationHandlerTest,
-       TestSetImageIfPrimaryAccountReady_UnifiedConsent) {
+       MAYBE_TestSetImageIfPrimaryAccountReady_UnifiedConsent) {
   unified_consent::ScopedUnifiedConsent scoped_unified_consent(
       unified_consent::UnifiedConsentFeatureState::kEnabled);