Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/oned/BC_OneDReader.h

Index: xfa/fxbarcode/oned/BC_OneDReader.h
diff --git a/xfa/fxbarcode/oned/BC_OneDReader.h b/xfa/fxbarcode/oned/BC_OneDReader.h
index 2bab06e9b859495ef719471c6b175530913e30ba..77e04777a4da0ecbb4397454ea1598746cf063a0 100644
--- a/xfa/fxbarcode/oned/BC_OneDReader.h
+++ b/xfa/fxbarcode/oned/BC_OneDReader.h
@@ -15,17 +15,18 @@ class CBC_CommonBitArray;
 class CBC_OneDReader : public CBC_Reader {
  public:
   CBC_OneDReader();
-  virtual ~CBC_OneDReader();
-  virtual CFX_ByteString Decode(CBC_BinaryBitmap* image, int32_t& e);
-  virtual CFX_ByteString Decode(CBC_BinaryBitmap* image,
-                                int32_t hints,
-                                int32_t& e);
+  ~CBC_OneDReader() override;
+
+  // CBC_Reader
+  CFX_ByteString Decode(CBC_BinaryBitmap* image, int32_t& e) override;
+  CFX_ByteString Decode(CBC_BinaryBitmap* image,
+                        int32_t hints,
+                        int32_t& e) override;
+
   virtual CFX_ByteString DecodeRow(int32_t rowNumber,
                                    CBC_CommonBitArray* row,
                                    int32_t hints,
-                                   int32_t& e) {
-    return "";
-  }
+                                   int32_t& e);
 
  private:
   CFX_ByteString DeDecode(CBC_BinaryBitmap* image, int32_t hints, int32_t& e);