Add a class to allocate small objects w/o extra calls to new.

src/core/SkSpriteBlitter_ARGB32.cpp

Index: src/core/SkSpriteBlitter_ARGB32.cpp
diff --git a/src/core/SkSpriteBlitter_ARGB32.cpp b/src/core/SkSpriteBlitter_ARGB32.cpp
index 3e8612dda3e9e6cdace44dbfb8ff73877efe5e83..8ee433a26899fd77c4e1fdfafd91526733832360 100644
--- a/src/core/SkSpriteBlitter_ARGB32.cpp
+++ b/src/core/SkSpriteBlitter_ARGB32.cpp
@@ -263,11 +263,10 @@ public:
 
 ///////////////////////////////////////////////////////////////////////////////
 
-#include "SkTemplatesPriv.h"
+SkSpriteBlitter* SkSpriteBlitter::ChooseD32(const SkBitmap& source, const SkPaint& paint,
+        SkStackAllocator<kBlitterStorageByteCount>* allocator) {
+    SkASSERT(allocator != NULL);
 
-SkSpriteBlitter* SkSpriteBlitter::ChooseD32(const SkBitmap& source,
-                                            const SkPaint& paint,
-                                            void* storage, size_t storageSize) {
     if (paint.getMaskFilter() != NULL) {
         return NULL;
     }
@@ -283,27 +282,28 @@ SkSpriteBlitter* SkSpriteBlitter::ChooseD32(const SkBitmap& source,
                 return NULL;    // we only have opaque sprites
             }
             if (xfermode || filter) {
-                SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444_XferFilter,
-                                      storage, storageSize, (source, paint));
+                SkSTACK_ALLOCATE(blitter, (*allocator),
+                                 Sprite_D32_S4444_XferFilter, (source, paint));
             } else if (source.isOpaque()) {
-                SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444_Opaque,
-                                      storage, storageSize, (source));
+                SkSTACK_ALLOCATE(blitter, (*allocator),
+                                 Sprite_D32_S4444_Opaque, (source));
             } else {
-                SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444,
-                                      storage, storageSize, (source));
+                SkSTACK_ALLOCATE(blitter, (*allocator), Sprite_D32_S4444,
+                                 (source));
             }
             break;
         case kPMColor_SkColorType:
             if (xfermode || filter) {
                 if (255 == alpha) {
                     // this can handle xfermode or filter, but not alpha
-                    SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32A_XferFilter,
-                                      storage, storageSize, (source, paint));
+                    SkSTACK_ALLOCATE(blitter, (*allocator),
+                                     Sprite_D32_S32A_XferFilter,
+                                     (source, paint));
                 }
             } else {
                 // this can handle alpha, but not xfermode or filter
-                SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32,
-                              storage, storageSize, (source, alpha));
+                SkSTACK_ALLOCATE(blitter, (*allocator), Sprite_D32_S32,
+                                 (source, alpha));
             }
             break;
         default: