[Sheriff] Disable Policytest.HomepageLocation on Mac Dbg

TBR=poromov

Bug: 1159423
Change-Id: I4172f2f1fa777d12e2d2f845a12b3eba41214f3e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2595527Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837592}

chrome/browser/policy/policy_browsertest.cc

@@ -379,7 +379,14 @@ IN_PROC_BROWSER_TEST_F(PolicyTest, MAYBE_Disable3DAPIs) {
   EXPECT_TRUE(IsWebGLEnabled(contents));
 }
 
-IN_PROC_BROWSER_TEST_F(PolicyTest, HomepageLocation) {
+#if defined(OS_MAC) && !defined(NDEBUG)
+// Times out on mac-debug.
+// TODO(crbug.com/1159423): Re-enable
+#define MAYBE_HomepageLocation DISABLED_HomepageLocation
+#else
+#define MAYBE_HomepageLocation HomepageLocation
+#endif
+IN_PROC_BROWSER_TEST_F(PolicyTest, MAYBE_HomepageLocation) {
   // Verifies that the homepage can be configured with policies.
   // Set a default, and check that the home button navigates there.
   browser()->profile()->GetPrefs()->SetString(