[Chromecast] Disable CastMediaBlocker intergration tests.

chromecast/BUILD.gn

Index: chromecast/BUILD.gn
diff --git a/chromecast/BUILD.gn b/chromecast/BUILD.gn
index c2ab7a3f63f8f4fb0abf03c23c6accf5defb1250..d902575ee7881cc023cd2f99dfddd450d0bdb5ff 100644
--- a/chromecast/BUILD.gn
+++ b/chromecast/BUILD.gn
@@ -91,6 +91,15 @@ cast_test_group("cast_tests") {
       ]
       if (!is_cast_desktop_build) {
         args += [ "--use-gpu-in-tests" ]
+
+        # TODO(derekjchow): Make these tests pass on Chromecast devices.
+        #    Once all of the CastMediaBlockerTest.* have been un-DISABLEd and
+        #    are running successfully, revisit these tests and see if they pass
+        #    on devices. (crbug/665118, internal b/32023194)
+        gtest_excludes = [
+          "CastMediaBlockerBrowserTest.Video_BlockUnblock",
+          "CastMediaBlockerBrowserTest.Audio_BlockUnblock",
+        ]
       }
     }
     filters += [ cast_shell_browsertests_filter ]