Remove FX_BOOL from xfa.

xfa/fwl/core/ifwl_formproxy.cpp

Index: xfa/fwl/core/ifwl_formproxy.cpp
diff --git a/xfa/fwl/core/ifwl_formproxy.cpp b/xfa/fwl/core/ifwl_formproxy.cpp
index 30c25827d5192bc2ea06523d4b7a1eea55b377ef..d06cf0b7a66f5c31dfa5f2437eb93b496cd0ae2e 100644
--- a/xfa/fwl/core/ifwl_formproxy.cpp
+++ b/xfa/fwl/core/ifwl_formproxy.cpp
@@ -21,9 +21,9 @@ FWL_Type IFWL_FormProxy::GetClassID() const {
   return FWL_Type::FormProxy;
 }
 
-FX_BOOL IFWL_FormProxy::IsInstance(const CFX_WideStringC& wsClass) const {
+bool IFWL_FormProxy::IsInstance(const CFX_WideStringC& wsClass) const {
   if (wsClass == CFX_WideStringC(FWL_CLASS_FormProxy)) {
-    return TRUE;
+    return true;
   }
   return IFWL_Form::IsInstance(wsClass);
 }