Disable more failing tests.

components/copresence/handlers/audio/audio_directive_handler_unittest.cc

Index: components/copresence/handlers/audio/audio_directive_handler_unittest.cc
diff --git a/components/copresence/handlers/audio/audio_directive_handler_unittest.cc b/components/copresence/handlers/audio/audio_directive_handler_unittest.cc
index 6849f51c27dcb16d04197f0bc372847179d9aba6..d637c900720e67fa5aa30f516d96c2e85caf04dc 100644
--- a/components/copresence/handlers/audio/audio_directive_handler_unittest.cc
+++ b/components/copresence/handlers/audio/audio_directive_handler_unittest.cc
@@ -75,7 +75,10 @@ class AudioDirectiveHandlerTest : public testing::Test {
   DISALLOW_COPY_AND_ASSIGN(AudioDirectiveHandlerTest);
 };
 
-TEST_F(AudioDirectiveHandlerTest, Basic) {
+// TODO(rkc): Find and fix the memory leak here.
+#define MAYBE_Basic DISABLED_Basic
+
+TEST_F(AudioDirectiveHandlerTest, MAYBE_Basic) {
   const base::TimeDelta kSmallTtl = base::TimeDelta::FromMilliseconds(0x1337);
   const base::TimeDelta kLargeTtl = base::TimeDelta::FromSeconds(0x7331);