AbstractTexture: Implement Save using new common methods

Source/Core/VideoCommon/AbstractTexture.h

@@ -17,8 +17,8 @@ class AbstractTexture
 public:
   explicit AbstractTexture(const TextureConfig& c);
   virtual ~AbstractTexture();
+
   virtual void Bind(unsigned int stage) = 0;
-  bool Save(const std::string& filename, unsigned int level);
 
   struct RawTextureInfo
   {
@@ -43,6 +43,8 @@ public:
   virtual void Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
                     size_t buffer_size) = 0;
 
+  bool Save(const std::string& filename, unsigned int level);
+
   static bool IsCompressedFormat(AbstractTextureFormat format);
   static size_t CalculateStrideForFormat(AbstractTextureFormat format, u32 row_length);
   static size_t GetTexelSizeForFormat(AbstractTextureFormat format);