Add missing include for SkRRect

Bug: 180598213
Change-Id: Id71c79655c86f4a83c3d411eb56db48264b268b8
(cherry picked from commit 83a29ce9fe8308d61856fd798ad7e960517d1690)
diff --git a/libs/renderengine/skia/filters/BlurFilter.cpp b/libs/renderengine/skia/filters/BlurFilter.cpp
index 9d20e32..5960e48 100644
--- a/libs/renderengine/skia/filters/BlurFilter.cpp
+++ b/libs/renderengine/skia/filters/BlurFilter.cpp
@@ -20,6 +20,7 @@
 #include <SkCanvas.h>
 #include <SkData.h>
 #include <SkPaint.h>
+#include <SkRRect.h>
 #include <SkRuntimeEffect.h>
 #include <SkSize.h>
 #include <SkString.h>