Make code compile with clang_use_chrome_plugin (part III)

This change contains files in xfa/fxbarcode directory.
This is part of the efforts to make PDFium code compilable
by Clang chromium style plugins.

The changes are mainly the following:
-- move inline constructor/destructor of complex class/struct out-of-line;
-- add constructor/destructor of complex class/struct if not
 explicitly defined;
-- add explicit out-of-line copy constructor when needed;
-- move inline virtual functions out-of-line;
-- Properly mark virtual functions with 'override';
-- some minor cleanups;

BUG=pdfium:469

Review-Url: https://codereview.chromium.org/2067903002

1 files changed, 2 insertions, 2 deletions

diff --git a/xfa/fxbarcode/cbc_upca.h b/xfa/fxbarcode/cbc_upca.h
index a2e0658f39..cf45b89786 100644
--- a/xfa/fxbarcode/cbc_upca.h
+++ b/xfa/fxbarcode/cbc_upca.h
@@ -17,7 +17,7 @@ class CBC_UPCA : public CBC_OneCode {
   CBC_UPCA();
   ~CBC_UPCA() override;
 
-  // CBC_OneCode:
+  // CBC_CodeBase
   FX_BOOL Encode(const CFX_WideStringC& contents,
                  FX_BOOL isDevice,
                  int32_t& e) override;
@@ -30,7 +30,7 @@ class CBC_UPCA : public CBC_OneCode {
                         int32_t height,
                         int32_t& e) override;
   CFX_WideString Decode(CFX_DIBitmap* pBitmap, int32_t& e) override;
-  BC_TYPE GetType() override { return BC_UPCA; }
+  BC_TYPE GetType() override;
 
  private:
   CFX_WideString Preprocess(const CFX_WideStringC& contents);