Remove mutex locks in SchemeRegistry

third_party/WebKit/Source/wtf/ThreadingPthreads.cpp

Index: third_party/WebKit/Source/wtf/ThreadingPthreads.cpp
diff --git a/third_party/WebKit/Source/wtf/ThreadingPthreads.cpp b/third_party/WebKit/Source/wtf/ThreadingPthreads.cpp
index 89968862a34bec6ae148e64018b24f4eb18496de..17febc9e9036bcb15e286a8666c012a0920e21c3 100644
--- a/third_party/WebKit/Source/wtf/ThreadingPthreads.cpp
+++ b/third_party/WebKit/Source/wtf/ThreadingPthreads.cpp
@@ -240,6 +240,14 @@ bool isBeforeThreadCreated() {
 void willCreateThread() {
   s_threadCreated = true;
 }
+#else
+bool isAtomicallyInitializedStaticMutexLockHeld() {
+  return false;
+}
+bool isBeforeThreadCreated() {
+  return false;
+}
+void willCreateThread() {}
 #endif
 
 }  // namespace WTF