Test RTC_DCHECK_IS_ON instead of checking DCHECK_ALWAYS_ON everywhere

webrtc/base/buffer.h

Index: webrtc/base/buffer.h
diff --git a/webrtc/base/buffer.h b/webrtc/base/buffer.h
index 6ae49f7a8f74e07816d362f5f1032b043f5f1c68..44f941eb60b2bb1016874d6f94bbda52a759f10a 100644
--- a/webrtc/base/buffer.h
+++ b/webrtc/base/buffer.h
@@ -349,7 +349,7 @@ class BufferT {
   // Called when *this has been moved from. Conceptually it's a no-op, but we
   // can mutate the state slightly to help subsequent sanity checks catch bugs.
   void OnMovedFrom() {
-#ifdef NDEBUG
+#if RTC_DCHECK_IS_ON
     // Make *this consistent and empty. Shouldn't be necessary, but better safe
     // than sorry.
     size_ = 0;