Move core/fxcrt/include to core/fxcrt

BUG=pdfium:611

Review-Url: https://codereview.chromium.org/2382723003
diff --git a/core/fpdfdoc/cpdf_variabletext.h b/core/fpdfdoc/cpdf_variabletext.h
index cc13b33..e57636e 100644
--- a/core/fpdfdoc/cpdf_variabletext.h
+++ b/core/fpdfdoc/cpdf_variabletext.h
@@ -15,9 +15,9 @@
 #include "core/fpdfdoc/cpvt_lineinfo.h"
 #include "core/fpdfdoc/cpvt_wordplace.h"
 #include "core/fpdfdoc/cpvt_wordrange.h"
-#include "core/fxcrt/include/fx_coordinates.h"
-#include "core/fxcrt/include/fx_string.h"
-#include "core/fxcrt/include/fx_system.h"
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxcrt/fx_string.h"
+#include "core/fxcrt/fx_system.h"
 #include "core/fxge/include/fx_font.h"
 
 class CSection;