SkData can allocate room for its contents in the same block

src/core/SkBitmap.cpp

 
 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkBitmap.h"
@@ skipping 1193 matching lines @@
     }
 
     const size_t ramRB = info.minRowBytes();
     const int height = info.height();
     const size_t snugSize = snugRB * height;
     const size_t ramSize = ramRB * height;
     if (!buffer->validate(snugSize <= ramSize)) {
         return false;
     }
 
-    char* dst = (char*)sk_malloc_throw(ramSize);
+    SkAutoDataUnref data(SkData::NewUninitialized(ramSize));
+    char* dst = (char*)data->writable_data();
     buffer->readByteArray(dst, snugSize);
-    SkAutoDataUnref data(SkData::NewFromMalloc(dst, ramSize));
 
     if (snugSize != ramSize) {
         const char* srcRow = dst + snugRB * (height - 1);
         char* dstRow = dst + ramRB * (height - 1);
         for (int y = height - 1; y >= 1; --y) {
             memmove(dstRow, srcRow, snugRB);
             srcRow -= snugRB;
             dstRow -= ramRB;
         }
         SkASSERT(srcRow == dstRow); // first row does not need to be moved
@@ skipping 153 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef SK_DEBUG
 void SkImageInfo::validate() const {
     SkASSERT(fWidth >= 0);
     SkASSERT(fHeight >= 0);
     SkASSERT(SkColorTypeIsValid(fColorType));
     SkASSERT(SkAlphaTypeIsValid(fAlphaType));
 }
 #endif