Speculative revert to diagnose crash in chrome. Revert "Add SkCachedData and use it for SkMipMap"

src/core/SkBitmapProcState.cpp

Index: src/core/SkBitmapProcState.cpp
diff --git a/src/core/SkBitmapProcState.cpp b/src/core/SkBitmapProcState.cpp
index 4e9a575e02ec0f2f5424544762f197a14fe06669..6c1dc30449a81ed0a1ddd7686a2cd5eaab5b1a31 100644
--- a/src/core/SkBitmapProcState.cpp
+++ b/src/core/SkBitmapProcState.cpp
@@ -260,10 +260,11 @@ bool SkBitmapProcState::possiblyScaleImage() {
     if (scaleSqd > SK_Scalar1) {
         fCurrMip.reset(SkMipMapCache::FindAndRef(fOrigBitmap));
         if (NULL == fCurrMip.get()) {
-            fCurrMip.reset(SkMipMapCache::AddAndRef(fOrigBitmap));
+            fCurrMip.reset(SkMipMap::Build(fOrigBitmap));
             if (NULL == fCurrMip.get()) {
                 return false;
             }
+            SkMipMapCache::Add(fOrigBitmap, fCurrMip);
         }
 
         SkScalar levelScale = SkScalarInvert(SkScalarSqrt(scaleSqd));