Rename CFWL_Thread classes to ThreadImp

xfa/src/fxfa/src/app/xfa_fwladapter.cpp

Index: xfa/src/fxfa/src/app/xfa_fwladapter.cpp
diff --git a/xfa/src/fxfa/src/app/xfa_fwladapter.cpp b/xfa/src/fxfa/src/app/xfa_fwladapter.cpp
index 3c9f1a155618d157c8497db95c240f4042d1eb3e..077fa648f31ef7da88b50292fe418dc4ff7783d5 100644
--- a/xfa/src/fxfa/src/app/xfa_fwladapter.cpp
+++ b/xfa/src/fxfa/src/app/xfa_fwladapter.cpp
@@ -15,9 +15,6 @@ IFWL_AdapterNative* FWL_CreateFuelAdapterNative() {
 }
 void FWL_ReleaseFuelAdapterNative(IFWL_AdapterNative* native) {}
 void FWL_PostMessageToMainRoop(CFWL_Message* pMessage) {}
-IFWL_AdapterSemaphore* IFWL_AdapterSemaphore::Create() {
-  return NULL;
-}
 FX_BOOL FWL_ShowCaret(IFWL_Widget* pWidget,
                       FX_BOOL bVisible,
                       const CFX_RectF* pRtAnchor) {