Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/BC_BufferedImageLuminanceSource.cpp

Index: xfa/fxbarcode/BC_BufferedImageLuminanceSource.cpp
diff --git a/xfa/fxbarcode/BC_BufferedImageLuminanceSource.cpp b/xfa/fxbarcode/BC_BufferedImageLuminanceSource.cpp
index f822349972d162edd0a9589e6350d3204999a5e1..7cdf957ce0d62cccb5bfd1c1eec7ce2f38a81287 100644
--- a/xfa/fxbarcode/BC_BufferedImageLuminanceSource.cpp
+++ b/xfa/fxbarcode/BC_BufferedImageLuminanceSource.cpp
@@ -30,7 +30,8 @@
 
 class CBC_Pause : public IFX_Pause {
  public:
-  virtual FX_BOOL NeedToPauseNow() { return TRUE; }
+  // IFX_Pause
+  FX_BOOL NeedToPauseNow() override;
 };
 
 static CFX_DIBitmap* CreateDIBSource(IFX_FileRead* fileread) {
@@ -154,3 +155,7 @@ CFX_ByteArray* CBC_BufferedImageLuminanceSource::GetMatrix() {
   }
   return matrix;
 }
+
+FX_BOOL CBC_Pause::NeedToPauseNow() {
+  return TRUE;
+}