eliminate code related to SkBitmap::Config

src/image/SkImagePriv.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImagePriv.h"
 #include "SkCanvas.h"
 #include "SkPicture.h"
 
-#ifdef SK_SUPPORT_LEGACY_BITMAP_CONFIG
-SkBitmap::Config SkColorTypeToBitmapConfig(SkColorType colorType) {
-    switch (colorType) {
-        case kAlpha_8_SkColorType:
-            return SkBitmap::kA8_Config;
-
-        case kARGB_4444_SkColorType:
-            return SkBitmap::kARGB_4444_Config;
-
-        case kRGB_565_SkColorType:
-            return SkBitmap::kRGB_565_Config;
-
-        case kN32_SkColorType:
-            return SkBitmap::kARGB_8888_Config;
-
-        case kIndex_8_SkColorType:
-            return SkBitmap::kIndex8_Config;
-
-        default:
-            // break for unsupported colortypes
-            break;
-    }
-    return SkBitmap::kNo_Config;
-}
-
-SkColorType SkBitmapConfigToColorType(SkBitmap::Config config) {
-    static const SkColorType gCT[] = {
-        kUnknown_SkColorType,   // kNo_Config
-        kAlpha_8_SkColorType,   // kA8_Config
-        kIndex_8_SkColorType,   // kIndex8_Config
-        kRGB_565_SkColorType,   // kRGB_565_Config
-        kARGB_4444_SkColorType, // kARGB_4444_Config
-        kN32_SkColorType,   // kARGB_8888_Config
-    };
-    SkASSERT((unsigned)config < SK_ARRAY_COUNT(gCT));
-    return gCT[config];
-}
-#endif
-
 SkImage* SkNewImageFromBitmap(const SkBitmap& bm, bool canSharePixelRef) {
     const SkImageInfo info = bm.info();
     if (kUnknown_SkColorType == info.colorType()) {
         return NULL;
     }
 
     SkImage* image = NULL;
     if (canSharePixelRef || bm.isImmutable()) {
         image = SkNewImageFromPixelRef(info, bm.pixelRef(), bm.rowBytes());
     } else {
         bm.lockPixels();
         if (bm.getPixels()) {
             image = SkImage::NewRasterCopy(info, bm.getPixels(), bm.rowBytes());
         }
         bm.unlockPixels();
     }
     return image;
 }