move SkFilterShader into private header
Review URL: https://codereview.appspot.com/6454107

git-svn-id: http://skia.googlecode.com/svn/trunk@4961 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkTableColorFilter.cpp b/src/effects/SkTableColorFilter.cpp
index d6cbb5e..769a40d 100644
--- a/src/effects/SkTableColorFilter.cpp
+++ b/src/effects/SkTableColorFilter.cpp
@@ -1,3 +1,4 @@
+#include "SkBitmap.h"
 #include "SkColorPriv.h"
 #include "SkTableColorFilter.h"
 #include "SkUnPreMultiply.h"