Move core/fxcrt/include to core/fxcrt

BUG=pdfium:611

Review-Url: https://codereview.chromium.org/2382723003
diff --git a/fpdfsdk/javascript/PublicMethods.cpp b/fpdfsdk/javascript/PublicMethods.cpp
index c7f7b85..6a96466 100644
--- a/fpdfsdk/javascript/PublicMethods.cpp
+++ b/fpdfsdk/javascript/PublicMethods.cpp
@@ -10,7 +10,7 @@
 #include <vector>
 
 #include "core/fpdfdoc/cpdf_interform.h"
-#include "core/fxcrt/include/fx_ext.h"
+#include "core/fxcrt/fx_ext.h"
 #include "fpdfsdk/include/cpdfsdk_document.h"
 #include "fpdfsdk/include/cpdfsdk_environment.h"
 #include "fpdfsdk/include/cpdfsdk_interform.h"