Remove DCHECK_IS_ON() condition check around *.isGraphOwner() method

third_party/WebKit/Source/modules/webaudio/DeferredTaskHandler.cpp

Index: third_party/WebKit/Source/modules/webaudio/DeferredTaskHandler.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/DeferredTaskHandler.cpp b/third_party/WebKit/Source/modules/webaudio/DeferredTaskHandler.cpp
index f03fd8605b7ac20455be6adca4605713955ebb57..e68c8696194235502f704f4819b588ce7648f87e 100644
--- a/third_party/WebKit/Source/modules/webaudio/DeferredTaskHandler.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/DeferredTaskHandler.cpp
@@ -65,11 +65,15 @@ void DeferredTaskHandler::offlineLock() {
   m_contextGraphMutex.lock();
 }
 
-#if DCHECK_IS_ON()
 bool DeferredTaskHandler::isGraphOwner() {
+#if DCHECK_IS_ON()
   return m_contextGraphMutex.locked();
-}
+#else
+  // The method is only used inside of DCHECK() so it must be no-op in the
+  // release build. Returning false so we can catch when it happens.
+  return false;
 #endif
+}
 
 void DeferredTaskHandler::addDeferredBreakConnection(AudioHandler& node) {
   DCHECK(isAudioThread());