guard rasterizer and drawlooper setters

Need to land https://codereview.chromium.org/1823513002/ first

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1821533002

Review URL: https://codereview.chromium.org/1821533002
diff --git a/tools/android/SkAndroidSDKCanvas.cpp b/tools/android/SkAndroidSDKCanvas.cpp
index 1deb97c..35b1581 100644
--- a/tools/android/SkAndroidSDKCanvas.cpp
+++ b/tools/android/SkAndroidSDKCanvas.cpp
@@ -8,6 +8,7 @@
 #include "SkAndroidSDKCanvas.h"
 
 #include "SkColorFilter.h"
+#include "SkDrawLooper.h"
 #include "SkPaint.h"
 #include "SkPathEffect.h"
 #include "SkShader.h"