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, 4 insertions, 2 deletions

diff --git a/xfa/fxbarcode/common/BC_CommonBitMatrix.h b/xfa/fxbarcode/common/BC_CommonBitMatrix.h
index ebf7454dca..48a26b9f8c 100644
--- a/xfa/fxbarcode/common/BC_CommonBitMatrix.h
+++ b/xfa/fxbarcode/common/BC_CommonBitMatrix.h
@@ -15,6 +15,10 @@ class CBC_CommonBitMatrix {
  public:
   CBC_CommonBitMatrix();
   virtual ~CBC_CommonBitMatrix();
+
+  virtual void Init(int32_t dimension);
+  virtual void Init(int32_t width, int32_t height);
+
   FX_BOOL Get(int32_t x, int32_t y);
   void Set(int32_t x, int32_t y);
   void Flip(int32_t x, int32_t y);
@@ -32,8 +36,6 @@ class CBC_CommonBitMatrix {
   int32_t GetHeight();
   int32_t GetRowSize();
   int32_t GetDimension(int32_t& e);
-  virtual void Init(int32_t dimension);
-  virtual void Init(int32_t width, int32_t height);
   int32_t* GetBits();
 
  private: