Always enable lock level checks.

Gathering data for Bug: 9285048.

Change-Id: I2569f2fcc428df4ee43695bb9144c05f204a3070
diff --git a/src/base/mutex.h b/src/base/mutex.h
index a3efd5c..d6ae3dc 100644
--- a/src/base/mutex.h
+++ b/src/base/mutex.h
@@ -53,7 +53,7 @@
 class ScopedContentionRecorder;
 class Thread;
 
-const bool kDebugLocking = kIsDebugBuild;
+const bool kDebugLocking = true || kIsDebugBuild;
 
 // Base class for all Mutex implementations
 class BaseMutex {