base: Remove the string logging from CHECK().

media/cast/test/sender.cc

Index: media/cast/test/sender.cc
diff --git a/media/cast/test/sender.cc b/media/cast/test/sender.cc
index 5d9334629fc8fd74096ee96e996ceb1793c0e56d..c5b79a8a77a6d47a6e69344abad87475c5e60767 100644
--- a/media/cast/test/sender.cc
+++ b/media/cast/test/sender.cc
@@ -77,8 +77,8 @@ void UpdateCastTransportStatus(
 }
 
 void QuitLoopOnInitializationResult(media::cast::OperationalStatus result) {
-  CHECK(result == media::cast::STATUS_INITIALIZED)
-      << "Cast sender uninitialized";
+  // Cast sender uninitialized
+  CHECK(result == media::cast::STATUS_INITIALIZED);
   base::MessageLoop::current()->QuitWhenIdle();
 }