Adding premul and 565 swizzles for bmp:

src/codec/SkCodecPriv.h

 /*
  * Copyright 2015 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCodecPriv_DEFINED
 #define SkCodecPriv_DEFINED
 
@@ skipping 47 matching lines @@
         return compute_row_bytes_ppb(width, pixelsPerByte);
     } else {
         SkASSERT(0 == bitsPerPixel % 8);
         const uint32_t bytesPerPixel = bitsPerPixel / 8;
         return compute_row_bytes_bpp(width, bytesPerPixel);
     }
 }
 
 /*
  *
- * Checks if alpha types are premul and unpremul
- *
- */
-static inline bool premul_and_unpremul(SkAlphaType dst, SkAlphaType src) {
-    return kPremul_SkAlphaType == dst && kUnpremul_SkAlphaType == src;
-}
-
-/*
- *
  * Get a byte from a buffer
  * This method is unsafe, the caller is responsible for performing a check
  *
  */
 static inline uint8_t get_byte(uint8_t* buffer, uint32_t i) {
     return buffer[i];
 }
 
 /*
  *
@@ skipping 21 matching lines @@
     uint32_t result;
     memcpy(&result, &(buffer[i]), 4);
 #ifdef SK_CPU_BENDIAN
     return SkEndianSwap32(result);
 #else
     return result;
 #endif
 }
 
 #endif // SkCodecPriv_DEFINED