Working plumb of image scaling:

src/opts/SkBitmapProcState_opts_SSE2.cpp

Index: src/opts/SkBitmapProcState_opts_SSE2.cpp
diff --git a/src/opts/SkBitmapProcState_opts_SSE2.cpp b/src/opts/SkBitmapProcState_opts_SSE2.cpp
index 4bba8c3298f9785a2ef62cd5cbfb9192c2447c31..dce1e2431be9ffb95d3b8ae1f4e136480b26f1fe 100644
--- a/src/opts/SkBitmapProcState_opts_SSE2.cpp
+++ b/src/opts/SkBitmapProcState_opts_SSE2.cpp
@@ -15,7 +15,7 @@ void S32_opaque_D32_filter_DX_SSE2(const SkBitmapProcState& s,
                                    const uint32_t* xy,
                                    int count, uint32_t* colors) {
     SkASSERT(count > 0 && colors != NULL);
-    SkASSERT(s.fDoFilter);
+    SkASSERT(s.fFilterQuality != SkBitmapProcState::kNone_BitmapFilter);
     SkASSERT(s.fBitmap->config() == SkBitmap::kARGB_8888_Config);
     SkASSERT(s.fAlphaScale == 256);
 
@@ -121,7 +121,7 @@ void S32_alpha_D32_filter_DX_SSE2(const SkBitmapProcState& s,
                                   const uint32_t* xy,
                                   int count, uint32_t* colors) {
     SkASSERT(count > 0 && colors != NULL);
-    SkASSERT(s.fDoFilter);
+    SkASSERT(s.fFilterQuality != SkBitmapProcState::kNone_BitmapFilter);
     SkASSERT(s.fBitmap->config() == SkBitmap::kARGB_8888_Config);
     SkASSERT(s.fAlphaScale < 256);
 
@@ -641,7 +641,7 @@ void S32_D16_filter_DX_SSE2(const SkBitmapProcState& s,
                                    const uint32_t* xy,
                                    int count, uint16_t* colors) {
     SkASSERT(count > 0 && colors != NULL);
-    SkASSERT(s.fDoFilter);
+    SkASSERT(s.fFilterQuality != SkBitmapProcState::kNone_BitmapFilter);
     SkASSERT(s.fBitmap->config() == SkBitmap::kARGB_8888_Config);
     SkASSERT(s.fBitmap->isOpaque());