Replace use of ASSERT in test code.

webrtc/base/sharedexclusivelock_unittest.cc

Index: webrtc/base/sharedexclusivelock_unittest.cc
diff --git a/webrtc/base/sharedexclusivelock_unittest.cc b/webrtc/base/sharedexclusivelock_unittest.cc
index 3886fb27ab1a0771f7f091cc6777ae407b7fb36d..701405ab6fd0da35623cec3b8e620511ba05a2c9 100644
--- a/webrtc/base/sharedexclusivelock_unittest.cc
+++ b/webrtc/base/sharedexclusivelock_unittest.cc
@@ -10,6 +10,7 @@
 
 #include <memory>
 
+#include "webrtc/base/checks.h"
 #include "webrtc/base/common.h"
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/event.h"
@@ -60,9 +61,9 @@ class ReadTask : public SharedExclusiveTask {
 
  private:
   virtual void OnMessage(Message* message) {
-    ASSERT(rtc::Thread::Current() == worker_thread_.get());
-    ASSERT(message != NULL);
-    ASSERT(message->message_id == kMsgRead);
+    RTC_CHECK(rtc::Thread::Current() == worker_thread_.get());
+    RTC_CHECK(message != NULL);
+    RTC_CHECK(message->message_id == kMsgRead);
 
     TypedMessageData<int*>* message_data =
         static_cast<TypedMessageData<int*>*>(message->pdata);
@@ -90,9 +91,9 @@ class WriteTask : public SharedExclusiveTask {
 
  private:
   virtual void OnMessage(Message* message) {
-    ASSERT(rtc::Thread::Current() == worker_thread_.get());
-    ASSERT(message != NULL);
-    ASSERT(message->message_id == kMsgWrite);
+    RTC_CHECK(rtc::Thread::Current() == worker_thread_.get());
+    RTC_CHECK(message != NULL);
+    RTC_CHECK(message->message_id == kMsgWrite);
 
     TypedMessageData<int>* message_data =
         static_cast<TypedMessageData<int>*>(message->pdata);