Add alpha type to texture producer

src/image/SkImage_Gpu.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 "SkAutoPixmapStorage.h"
 #include "GrCaps.h"
 #include "GrContext.h"
@@ skipping 64 matching lines @@
     dst->pixelRef()->setImmutableWithID(this->uniqueID());
     if (kAllow_CachingHint == chint) {
         SkBitmapCache::Add(this->uniqueID(), *dst);
         fAddedRasterVersionToCache.store(true);
     }
     return true;
 }
 
 GrTexture* SkImage_Gpu::asTextureRef(GrContext* ctx, const GrTextureParams& params,
                                      SkSourceGammaTreatment gammaTreatment) const {
-    GrTextureAdjuster adjuster(this->peekTexture(), this->bounds(), this->uniqueID(),
+    GrTextureAdjuster adjuster(this->peekTexture(), this->alphaType(), this->bounds(), this->uniqueID(),
                                this->onImageInfo().colorSpace());
     return adjuster.refTextureSafeForParams(params, gammaTreatment, nullptr);
 }
 
 static void apply_premul(const SkImageInfo& info, void* pixels, size_t rowBytes) {
     switch (info.colorType()) {
         case kRGBA_8888_SkColorType:
         case kBGRA_8888_SkColorType:
             break;
         default:
@@ skipping 467 matching lines @@
         return nullptr;
     }
     SkAutoTUnref<GrTexture> texture(GrUploadMipMapToTexture(ctx, info, texels, mipLevelCount));
     if (!texture) {
         return nullptr;
     }
     return sk_make_sp<SkImage_Gpu>(texture->width(), texture->height(), kNeedNewImageUniqueID,
                                    info.alphaType(), texture, sk_ref_sp(info.colorSpace()),
                                    budgeted);
 }