Add alpha type to texture producer

src/image/SkImage_Raster.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 "SkImage_Base.h"
 #include "SkBitmap.h"
 #include "SkBitmapProcShader.h"
@@ skipping 190 matching lines @@
 GrTexture* SkImage_Raster::asTextureRef(GrContext* ctx, const GrTextureParams& params,
                                         SkSourceGammaTreatment gammaTreatment) const {
 #if SK_SUPPORT_GPU
     if (!ctx) {
         return nullptr;
     }
 
     uint32_t uniqueID;
     sk_sp<GrTexture> tex = this->refPinnedTexture(&uniqueID);
     if (tex) {
-        GrTextureAdjuster adjuster(fPinnedTexture.get(), fBitmap.bounds(),
+        GrTextureAdjuster adjuster(fPinnedTexture.get(), fBitmap.alphaType(), fBitmap.bounds(),
                                    fPinnedUniqueID, fBitmap.colorSpace());
         return adjuster.refTextureSafeForParams(params, gammaTreatment, nullptr);
     }
 
     return GrRefCachedBitmapTexture(ctx, fBitmap, params, gammaTreatment);
 #endif
 
     return nullptr;
 }
 
@@ skipping 147 matching lines @@
         // pixelref since the caller might call setImmutable() themselves
         // (thus changing our state).
         if (fBitmap.isImmutable()) {
             bitmap->setInfo(fBitmap.info(), fBitmap.rowBytes());
             bitmap->setPixelRef(fBitmap.pixelRef(), fBitmap.pixelRefOrigin());
             return true;
         }
     }
     return this->INHERITED::onAsLegacyBitmap(bitmap, mode);
 }