Remove the remainder of the skia source code from the Chromium repo....

skia/effects/SkPixelXorXfermode.cpp

-#include "SkPixelXorXfermode.h"
-#include "SkColorPriv.h"
-
-// we always return an opaque color, 'cause I don't know what to do with
-// the alpha-component and still return a valid premultiplied color.
-SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst)
-{
-    SkPMColor res = src ^ dst ^ fOpColor;
-    res |= (SK_A32_MASK << SK_A32_SHIFT);   // force it to be opaque
-    return res;
-}
-
-void SkPixelXorXfermode::flatten(SkFlattenableWriteBuffer& wb)
-{
-    this->INHERITED::flatten(wb);
-    wb.write32(fOpColor);
-}
-
-SkPixelXorXfermode::SkPixelXorXfermode(SkFlattenableReadBuffer& rb)
-    : SkXfermode(rb)
-{
-    fOpColor = rb.readU32();
-}
-
-SkFlattenable::Factory SkPixelXorXfermode::getFactory()
-{
-    return Create;
-}
-
-SkFlattenable* SkPixelXorXfermode::Create(SkFlattenableReadBuffer& rb)
-{
-    return SkNEW_ARGS(SkPixelXorXfermode, (rb));
-}
-
-
-