Revert of Make SkSmallAllocator obey the RAII invariants and be expandable

src/core/SkRasterPipelineBlitter.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBlitter.h"
 #include "SkBlendModePriv.h"
 #include "SkColor.h"
@@ skipping 81 matching lines @@
     return color.premul();
 }
 
 SkBlitter* SkRasterPipelineBlitter::Create(const SkPixmap& dst,
                                            const SkPaint& paint,
                                            SkTBlitterAllocator* alloc) {
     auto blitter = alloc->createT<SkRasterPipelineBlitter>(dst,
                                                            paint.getBlendMode(),
                                                            paint_color(dst, paint));
     auto earlyOut = [&] {
-        alloc->deleteLast();
+        blitter->~SkRasterPipelineBlitter();
+        alloc->freeLast();
         return nullptr;
     };
 
     SkBlendMode*      blend      = &blitter->fBlend;
     SkPM4f*           paintColor = &blitter->fPaintColor;
     SkRasterPipeline* pipeline   = &blitter->fShader;
 
     SkShader*      shader      = paint.getShader();
     SkColorFilter* colorFilter = paint.getColorFilter();
 
@@ skipping 179 matching lines @@
             case SkMask::kLCD16_Format:
                 fMaskPtr = mask.getAddrLCD16(x,y)-x;
                 fBlitMaskLCD16(x, clip.width());
                 break;
             default:
                 // TODO
                 break;
         }
     }
 }