Add alpha type to texture producer

src/gpu/GrTextureParamsAdjuster.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTextureParamsAdjuster.h"
 
 #include "GrCaps.h"
@@ skipping 94 matching lines @@
         localRect.fBottom *= sy;
     } else {
         localRect = SkRect::MakeWH(1.f, 1.f);
     }
 
     SkRect dstRect = SkRect::MakeIWH(copyParams.fWidth, copyParams.fHeight);
     copyDC->fillRectToRect(GrNoClip(), paint, SkMatrix::I(), dstRect, localRect);
     return copyDC->asTexture().release();
 }
 
-GrTextureAdjuster::GrTextureAdjuster(GrTexture* original, const SkIRect& contentArea,
-                                     uint32_t uniqueID, SkColorSpace* cs)
+GrTextureAdjuster::GrTextureAdjuster(GrTexture* original, SkAlphaType alphaType,
+                                     const SkIRect& contentArea, uint32_t uniqueID,
+                                     SkColorSpace* cs)
     : INHERITED(contentArea.width(), contentArea.height(),
                 GrPixelConfigIsAlphaOnly(original->config()))
     , fOriginal(original)
+    , fAlphaType(alphaType)
     , fColorSpace(cs)
     , fUniqueID(uniqueID)
 {
     SkASSERT(SkIRect::MakeWH(original->width(), original->height()).contains(contentArea));
     if (contentArea.fLeft > 0 || contentArea.fTop > 0 ||
         contentArea.fRight < original->width() || contentArea.fBottom < original->height()) {
         fContentArea.set(contentArea);
     }
 }
 
@@ skipping 403 matching lines @@
 }
 
 GrTexture* GrTextureMaker::generateTextureForParams(const CopyParams& copyParams, bool willBeMipped,
                                                     SkSourceGammaTreatment gammaTreatment) {
     SkAutoTUnref<GrTexture> original(this->refOriginalTexture(willBeMipped, gammaTreatment));
     if (!original) {
         return nullptr;
     }
     return copy_on_gpu(original, nullptr, copyParams);
 }