enforce 16byte alignment in shader contexts

src/core/SkBitmapProcShader.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapProcShader.h"
 #include "SkBitmapProcState.h"
 #include "SkBitmapProvider.h"
@@ skipping 102 matching lines @@
     SkBitmapProcState*  fState;
 
     typedef BitmapProcInfoContext INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 size_t SkBitmapProcShader::ContextSize(const ContextRec& rec) {
     // The SkBitmapProcState is stored outside of the context object, with the context holding
     // a pointer to it.
-    return sizeof(BitmapProcShaderContext) + sizeof(SkBitmapProcState);
+    return SkAlign16(sizeof(BitmapProcShaderContext) + sizeof(SkBitmapProcState));
 }
 
 SkShader::Context* SkBitmapProcShader::MakeContext(const SkShader& shader,
                                                    TileMode tmx, TileMode tmy,
                                                    const SkBitmapProvider& provider,
                                                    const ContextRec& rec, void* storage) {
     SkMatrix totalInverse;
     // Do this first, so we know the matrix can be inverted.
     if (!shader.computeTotalInverse(rec, &totalInverse)) {
         return nullptr;
@@ skipping 219 matching lines @@
         inner.reset(GrSimpleTextureEffect::Create(texture, matrix, params));
     }
 
     if (kAlpha_8_SkColorType == fRawBitmap.colorType()) {
         return GrFragmentProcessor::MulOutputByInputUnpremulColor(inner);
     }
     return GrFragmentProcessor::MulOutputByInputAlpha(inner);
 }
 
 #endif