add platformProcs() porting function



git-svn-id: http://skia.googlecode.com/svn/trunk@301 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/opts/SkBitmapProcState_opts_none.cpp b/src/opts/SkBitmapProcState_opts_none.cpp
new file mode 100644
index 0000000..868f808
--- /dev/null
+++ b/src/opts/SkBitmapProcState_opts_none.cpp
@@ -0,0 +1,18 @@
+#include "SkBitmapProcState.h"
+
+/*  A platform may optionally overwrite any of these with accelerated
+    versions. On input, these will already have valid function pointers,
+    so a platform need only overwrite the ones it chooses, based on the
+    current state (e.g. fBitmap, fInvMatrix, etc.)
+
+    fShaderProc32
+    fShaderProc16
+    fMatrixProc
+    fSampleProc32
+    fSampleProc32
+ */
+
+// empty implementation just uses default supplied function pointers
+void SkBitmapProcState::platformProcs() {}
+
+