add scaledimagecache

src/core/SkBitmapProcState.h

Index: src/core/SkBitmapProcState.h
diff --git a/src/core/SkBitmapProcState.h b/src/core/SkBitmapProcState.h
index 349194f3b455c64c6f58a8285efbec8f709856b1..70d7c0cb04e1c4eb586b6cc1fd0094580b02294e 100644
--- a/src/core/SkBitmapProcState.h
+++ b/src/core/SkBitmapProcState.h
@@ -13,6 +13,7 @@
 #include "SkBitmap.h"
 #include "SkBitmapFilter.h"
 #include "SkMatrix.h"
+#include "SkScaledImageCache.h"
 
 #define FractionalInt_IS_64BIT
 
@@ -35,8 +36,9 @@ struct SkConvolutionProcs;
 
 struct SkBitmapProcState {
 
-    SkBitmapProcState(): fBitmapFilter(NULL) {}
+    SkBitmapProcState(): fScaledCacheID(NULL), fBitmapFilter(NULL) {}
     ~SkBitmapProcState() {
+        SkASSERT(NULL == fScaledCacheID);
         SkDELETE(fBitmapFilter);
     }
 
@@ -157,6 +159,8 @@ private:
     SkBitmap            fOrigBitmap;        // CONSTRUCTOR
     SkBitmap            fScaledBitmap;      // chooseProcs
 
+    SkScaledImageCache::ID* fScaledCacheID;
+
     MatrixProc chooseMatrixProc(bool trivial_matrix);
     bool chooseProcs(const SkMatrix& inv, const SkPaint&);
     ShaderProc32 chooseShaderProc32();