Disabled two flaky subtests of SignalThreadTest.

webrtc/base/signalthread_unittest.cc

Index: webrtc/base/signalthread_unittest.cc
diff --git a/webrtc/base/signalthread_unittest.cc b/webrtc/base/signalthread_unittest.cc
index 57190128c5347bafcf31289e348ad904d654a72d..95b4ac1d6e600de0e28228b72bba36d6ee417aa7 100644
--- a/webrtc/base/signalthread_unittest.cc
+++ b/webrtc/base/signalthread_unittest.cc
@@ -159,7 +159,12 @@ TEST_F(SignalThreadTest, OwnerThreadGoesAway) {
   EXPECT_EQ(stopped, thread_stopped_); \
   EXPECT_EQ(deleted, thread_deleted_);
 
-TEST_F(SignalThreadTest, ThreadFinishes) {
+#if defined(WEBRTC_LINUX)
+#define MAYBE_ThreadFinishes DISABLED_ThreadFinishes
+#else
+#define MAYBE_ThreadFinishes ThreadFinishes
+#endif
+TEST_F(SignalThreadTest, MAYBE_ThreadFinishes) {
   thread_->Start();
   EXPECT_STATE(1, 0, 0, 0, 0);
   Thread::SleepMs(500);
@@ -168,7 +173,12 @@ TEST_F(SignalThreadTest, ThreadFinishes) {
   EXPECT_STATE(1, 1, 1, 0, 1);
 }
 
-TEST_F(SignalThreadTest, ReleasedThreadFinishes) {
+#if defined(WEBRTC_LINUX)
+#define MAYBE_ReleasedThreadFinishes DISABLED_ReleasedThreadFinishes
+#else
+#define MAYBE_ReleasedThreadFinishes ReleasedThreadFinishes
+#endif
+TEST_F(SignalThreadTest, MAYBE_ReleasedThreadFinishes) {
   thread_->Start();
   EXPECT_STATE(1, 0, 0, 0, 0);
   thread_->Release();