remove SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG -- dead code

src/core/SkBitmapDevice.cpp

Index: src/core/SkBitmapDevice.cpp
diff --git a/src/core/SkBitmapDevice.cpp b/src/core/SkBitmapDevice.cpp
index 96f4e40298914e52b2e7009a1ea138109b656011..476a124647ca8bea0c24a0f378a9d51410968868 100644
--- a/src/core/SkBitmapDevice.cpp
+++ b/src/core/SkBitmapDevice.cpp
@@ -199,75 +199,6 @@ bool SkBitmapDevice::onReadPixels(const SkBitmap& bitmap,
     return true;
 }
 
-#ifdef SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG
-void SkBitmapDevice::writePixels(const SkBitmap& bitmap,
-                                 int x, int y,
-                                 SkCanvas::Config8888 config8888) {
-    if (bitmap.isNull() || bitmap.getTexture()) {
-        return;
-    }
-    const SkBitmap* sprite = &bitmap;
-    // check whether we have to handle a config8888 that doesn't match SkPMColor
-    if (SkBitmap::kARGB_8888_Config == bitmap.config() &&
-        SkCanvas::kNative_Premul_Config8888 != config8888 &&
-        kPMColorAlias != config8888) {
-
-        // We're going to have to convert from a config8888 to the native config
-        // First we clip to the device bounds.
-        SkBitmap dstBmp = this->accessBitmap(true);
-        SkIRect spriteRect = SkIRect::MakeXYWH(x, y,
-                                               bitmap.width(), bitmap.height());
-        SkIRect devRect = SkIRect::MakeWH(dstBmp.width(), dstBmp.height());
-        if (!spriteRect.intersect(devRect)) {
-            return;
-        }
-
-        // write directly to the device if it has pixels and is SkPMColor
-        bool drawSprite;
-        if (SkBitmap::kARGB_8888_Config == dstBmp.config() && !dstBmp.isNull()) {
-            // we can write directly to the dst when doing the conversion
-            dstBmp.extractSubset(&dstBmp, spriteRect);
-            drawSprite = false;
-        } else {
-            // we convert to a temporary bitmap and draw that as a sprite
-            if (!dstBmp.allocPixels(SkImageInfo::MakeN32Premul(spriteRect.width(),
-                                                               spriteRect.height()))) {
-                return;
-            }
-            drawSprite = true;
-        }
-
-        // copy pixels to dstBmp and convert from config8888 to native config.
-        SkAutoLockPixels alp(bitmap);
-        uint32_t* srcPixels = bitmap.getAddr32(spriteRect.fLeft - x,
-                                               spriteRect.fTop - y);
-        SkCopyConfig8888ToBitmap(dstBmp,
-                                 srcPixels,
-                                 bitmap.rowBytes(),
-                                 config8888);
-
-        if (drawSprite) {
-            // we've clipped the sprite when we made a copy
-            x = spriteRect.fLeft;
-            y = spriteRect.fTop;
-            sprite = &dstBmp;
-        } else {
-            return;
-        }
-    }
-
-    SkPaint paint;
-    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
-    SkRasterClip clip(SkIRect::MakeWH(fBitmap.width(), fBitmap.height()));
-    SkDraw  draw;
-    draw.fRC = &clip;
-    draw.fClip = &clip.bwRgn();
-    draw.fBitmap = &fBitmap; // canvas should have already called accessBitmap
-    draw.fMatrix = &SkMatrix::I();
-    this->drawSprite(draw, *sprite, x, y, paint);
-}
-#endif
-
 void* SkBitmapDevice::onAccessPixels(SkImageInfo* info, size_t* rowBytes) {
     if (fBitmap.getPixels()) {
         *info = fBitmap.info();