Fix includes of SkBlurTypes.h

This will be necessary after https://skia-review.googlesource.com/c/skia/+/611077 lands, which
removes this include from SkPaint.h

Change-Id: Ibf196c297788576dac4ef5a33adac68a3830f959

libs/hwui/hwui/BlurDrawLooper.cpp

@@ -15,6 +15,7 @@
  */
 
 #include "BlurDrawLooper.h"
+#include <SkBlurTypes.h>
 #include <SkColorSpace.h>
 #include <SkMaskFilter.h>
 

libs/hwui/jni/MaskFilter.cpp

@@ -2,6 +2,7 @@
 #include "SkMaskFilter.h"
 #include "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
+#include "SkBlurTypes.h"
 #include "SkTableMaskFilter.h"
 
 static void ThrowIAE_IfNull(JNIEnv* env, void* ptr) {