Disable some extensions_unittests on LSAN builds.

extensions/renderer/api/serial/data_receiver_unittest.cc

Index: extensions/renderer/api/serial/data_receiver_unittest.cc
diff --git a/extensions/renderer/api/serial/data_receiver_unittest.cc b/extensions/renderer/api/serial/data_receiver_unittest.cc
index 0827a8a247f324a293b8359a6e0fc96bfbc9d298..0c7dc000d8a22475cbc735b71580a2551b873a3c 100644
--- a/extensions/renderer/api/serial/data_receiver_unittest.cc
+++ b/extensions/renderer/api/serial/data_receiver_unittest.cc
@@ -126,12 +126,24 @@ class DataReceiverTest : public ApiTestBase {
   DISALLOW_COPY_AND_ASSIGN(DataReceiverTest);
 };
 
-TEST_F(DataReceiverTest, Receive) {
+// https://crbug.com/599898
+#if defined(LEAK_SANITIZER)
+#define MAYBE_Receive DISABLED_Receive
+#else
+#define MAYBE_Receive Receive
+#endif
+TEST_F(DataReceiverTest, MAYBE_Receive) {
   data_to_send_.push("a");
   RunTest("data_receiver_unittest.js", "testReceive");
 }
 
-TEST_F(DataReceiverTest, ReceiveError) {
+// https://crbug.com/599898
+#if defined(LEAK_SANITIZER)
+#define MAYBE_ReceiveError DISABLED_ReceiveError
+#else
+#define MAYBE_ReceiveError ReceiveError
+#endif
+TEST_F(DataReceiverTest, MAYBE_ReceiveError) {
   error_to_send_.push(1);
   RunTest("data_receiver_unittest.js", "testReceiveError");
 }
@@ -176,7 +188,13 @@ TEST_F(DataReceiverTest, SerializeDuringReceive) {
   RunTest("data_receiver_unittest.js", "testSerializeDuringReceive");
 }
 
-TEST_F(DataReceiverTest, SerializeAfterClose) {
+// https://crbug.com/599898
+#if defined(LEAK_SANITIZER)
+#define MAYBE_SerializeAfterClose DISABLED_SerializeAfterClose
+#else
+#define MAYBE_SerializeAfterClose SerializeAfterClose
+#endif
+TEST_F(DataReceiverTest, MAYBE_SerializeAfterClose) {
   data_to_send_.push("a");
   RunTest("data_receiver_unittest.js", "testSerializeAfterClose");
 }