Use std::vector for fx_ucd.h arrays.

core/fxcrt/fx_arb.h

Index: core/fxcrt/fx_arb.h
diff --git a/core/fxcrt/fx_arb.h b/core/fxcrt/fx_arb.h
index 6d556fe9f9595140ebce8a72cead7ba017f3ffb4..d24197c7e5c7edd63ea20cc638f311caa4fc0e11 100644
--- a/core/fxcrt/fx_arb.h
+++ b/core/fxcrt/fx_arb.h
@@ -7,6 +7,8 @@
 #ifndef CORE_FXCRT_FX_ARB_H_
 #define CORE_FXCRT_FX_ARB_H_
 
+#include <vector>
+
 #include "core/fxcrt/fx_system.h"
 #include "core/fxcrt/fx_ucd.h"
 
@@ -39,10 +41,10 @@ enum FX_ARBPOSITION {
 };
 
 void FX_BidiLine(CFX_WideString& wsText, int32_t iBaseLevel = 0);
-void FX_BidiLine(CFX_TxtCharArray& chars,
+void FX_BidiLine(std::vector<CFX_TxtChar>& chars,
                  int32_t iCount,
                  int32_t iBaseLevel = 0);
-void FX_BidiLine(CFX_RTFCharArray& chars,
+void FX_BidiLine(std::vector<CFX_RTFChar>& chars,
                  int32_t iCount,
                  int32_t iBaseLevel = 0);