Fix includes of SkColorSpace

Required to land https://skia-review.googlesource.com/c/skia/+/526416

Change-Id: I7959b36c533f99334096a2bc467853a5aad92978
Bug: skia:13052
diff --git a/libs/hwui/jni/Paint.cpp b/libs/hwui/jni/Paint.cpp
index f768632..0aa1465 100644
--- a/libs/hwui/jni/Paint.cpp
+++ b/libs/hwui/jni/Paint.cpp
@@ -26,6 +26,7 @@
 #include <nativehelper/ScopedPrimitiveArray.h>
 
 #include "SkColorFilter.h"
+#include "SkColorSpace.h"
 #include "SkFont.h"
 #include "SkFontMetrics.h"
 #include "SkFontTypes.h"