SkData can allocate room for its contents in the same block

src/pdf/SkPDFFont.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 <ctype.h>
 
 #include "SkData.h"
@@ skipping 186 matching lines @@
     // this handles releasing the data we may have gotten from dynamicStream.
     // if data is null, it is a no-op
     SkAutoDataUnref aud(data);
 
     if (parsePFB(src, srcLen, headerLen, dataLen, trailerLen)) {
         static const int kPFBSectionHeaderLength = 6;
         const size_t length = *headerLen + *dataLen + *trailerLen;
         SkASSERT(length > 0);
         SkASSERT(length + (2 * kPFBSectionHeaderLength) <= srcLen);
 
-        SkAutoTMalloc<uint8_t> buffer(length);
+        SkData* data = SkData::NewUninitialized(length);
 
         const uint8_t* const srcHeader = src + kPFBSectionHeaderLength;
         // There is a six-byte section header before header and data
         // (but not trailer) that we're not going to copy.
-        const uint8_t* const srcData
-            = srcHeader + *headerLen + kPFBSectionHeaderLength;
+        const uint8_t* const srcData = srcHeader + *headerLen + kPFBSectionHeaderLength;
         const uint8_t* const srcTrailer = srcData + *headerLen;
 
-        uint8_t* const resultHeader = buffer.get();
+        uint8_t* const resultHeader = (uint8_t*)data->writable_data();
         uint8_t* const resultData = resultHeader + *headerLen;
         uint8_t* const resultTrailer = resultData + *dataLen;
 
         SkASSERT(resultTrailer + *trailerLen == resultHeader + length);
 
         memcpy(resultHeader,  srcHeader,  *headerLen);
         memcpy(resultData,    srcData,    *dataLen);
         memcpy(resultTrailer, srcTrailer, *trailerLen);
 
-        return SkData::NewFromMalloc(buffer.detach(), length);
+        return data;
     }
 
     // A PFA has to be converted for PDF.
     size_t hexDataLen;
     if (parsePFA((const char*)src, srcLen, headerLen, &hexDataLen, dataLen,
                  trailerLen)) {
         const size_t length = *headerLen + *dataLen + *trailerLen;
         SkASSERT(length > 0);
         SkAutoTMalloc<uint8_t> buffer(length);
 
@@ skipping 1253 matching lines @@
 
     insert("FontBBox", makeFontBBox(bbox, 1000))->unref();
     insertInt("FirstChar", 1);
     insertInt("LastChar", lastGlyphID() - firstGlyphID() + 1);
     insert("Widths", widthArray.get());
     insertName("CIDToGIDMap", "Identity");
 
     populateToUnicodeTable(NULL);
     return true;
 }