remove dst/rendertarget support for kARGB_4444_Config

src/core/SkDraw.cpp

 /*
  * Copyright 2006 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.
  */
 
 
 #include "SkDraw.h"
 #include "SkBlitter.h"
@@ skipping 204 matching lines @@
                 should I worry about dithering for the lower depths?
             */
             SkPMColor pmc = SkPreMultiplyColor(color);
             switch (bitmap.config()) {
                 case SkBitmap::kARGB_8888_Config:
                     if (data) {
                         *data = pmc;
                     }
 //                    SkDebugf("--- D32_Src_BitmapXferProc\n");
                     return D32_Src_BitmapXferProc;
-                case SkBitmap::kARGB_4444_Config:
-                    if (data) {
-                        *data = SkPixel32ToPixel4444(pmc);
-                    }
-//                    SkDebugf("--- D16_Src_BitmapXferProc\n");
-                    return D16_Src_BitmapXferProc;
                 case SkBitmap::kRGB_565_Config:
                     if (data) {
                         *data = SkPixel32ToPixel16(pmc);
                     }
 //                    SkDebugf("--- D16_Src_BitmapXferProc\n");
                     return D16_Src_BitmapXferProc;
                 case SkBitmap::kA8_Config:
                     if (data) {
                         *data = SkGetPackedA32(pmc);
                     }
@@ skipping 10 matching lines @@
     return NULL;
 }
 
 static void CallBitmapXferProc(const SkBitmap& bitmap, const SkIRect& rect,
                                BitmapXferProc proc, uint32_t procData) {
     int shiftPerPixel;
     switch (bitmap.config()) {
         case SkBitmap::kARGB_8888_Config:
             shiftPerPixel = 2;
             break;
-        case SkBitmap::kARGB_4444_Config:
         case SkBitmap::kRGB_565_Config:
             shiftPerPixel = 1;
             break;
         case SkBitmap::kA8_Config:
             shiftPerPixel = 0;
             break;
         default:
             SkDEBUGFAIL("Can't use xferproc on this config");
             return;
     }
@@ skipping 2560 matching lines @@
         mask->fImage = SkMask::AllocImage(size);
         memset(mask->fImage, 0, mask->computeImageSize());
     }
 
     if (SkMask::kJustComputeBounds_CreateMode != mode) {
         draw_into_mask(*mask, devPath, style);
     }
 
     return true;
 }