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/BitmapRegionDecoder.cpp b/libs/hwui/jni/BitmapRegionDecoder.cpp
index 1c20415..eb56ae3 100644
--- a/libs/hwui/jni/BitmapRegionDecoder.cpp
+++ b/libs/hwui/jni/BitmapRegionDecoder.cpp
@@ -25,6 +25,7 @@
 #include "BitmapRegionDecoder.h"
 #include "SkBitmap.h"
 #include "SkCodec.h"
+#include "SkColorSpace.h"
 #include "SkData.h"
 #include "SkStream.h"