Cleanup of SSE optimization files.

src/core/SkBitmapProcState_matrixProcs.cpp

Index: src/core/SkBitmapProcState_matrixProcs.cpp
diff --git a/src/core/SkBitmapProcState_matrixProcs.cpp b/src/core/SkBitmapProcState_matrixProcs.cpp
index a05c13ed283c847edf24f04f07b55b60d8ef6806..02204b676b2fc6945a86acb0adbbcdea4a2fd8d3 100644
--- a/src/core/SkBitmapProcState_matrixProcs.cpp
+++ b/src/core/SkBitmapProcState_matrixProcs.cpp
@@ -65,7 +65,7 @@ struct ClampTileProcs {
     }
 };
 
-// Referenced in opts_check_SSE2.cpp
+// Referenced in opts_check_x86.cpp
 void ClampX_ClampY_nofilter_scale(const SkBitmapProcState& s, uint32_t xy[],
                                   int count, int x, int y) {
     return NoFilterProc_Scale<ClampTileProcs, true>(s, xy, count, x, y);