4x allocation in PipeController is probably overkill.

src/pipe/utils/SamplePipeControllers.h

 /*
  * 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 "SkBitmap.h"
 #include "SkChunkAlloc.h"
 #include "SkGPipe.h"
 #include "SkPicture.h"
 #include "SkTDArray.h"
 
 class SkCanvas;
 class SkMatrix;
 
 class PipeController : public SkGPipeController {
 public:
     PipeController(SkCanvas* target, SkPicture::InstallPixelRefProc proc = NULL);
-    virtual ~PipeController();
+
     virtual void* requestBlock(size_t minRequest, size_t* actual) SK_OVERRIDE;
     virtual void notifyWritten(size_t bytes) SK_OVERRIDE;
 protected:
-    const void* getData() { return (const char*) fBlock + fBytesWritten; }
+    const void* getData() { return (const char*) fBlock.get() + fBytesWritten; }
     SkGPipeReader fReader;
 private:
-    void* fBlock;
+    SkAutoMalloc fBlock;
     size_t fBlockSize;
     size_t fBytesWritten;
     SkGPipeReader::Status fStatus;
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 
 class TiledPipeController : public PipeController {
 public:
     TiledPipeController(const SkBitmap&, SkPicture::InstallPixelRefProc proc = NULL,
@@ skipping 40 matching lines @@
         void* fBlock;
         // Number of bytes that were written to fBlock.
         size_t fBytes;
     };
     void* fBlock;
     size_t fBytesWritten;
     SkChunkAlloc fAllocator;
     SkTDArray<PipeBlock> fBlockList;
     int fNumberOfReaders;
 };