IWYU in SimpleColorMatrixAnimation

https://skia-review.googlesource.com/c/skia/+/571121 removes the include
from SkColorMatrixFilter to SkColorMatrix. This file uses the latter
directly, so include it.

This will fix a build breakage which is currently preventing a Skia
roll.

In addition, include SkColorFilter.h directly, now that we're no longer
using SkColorMatrixFilter (since
I01e29bd36ed3788c4f996092c81310c17f5039cd).

Bug: NA
Test: make
Change-Id: I8d1838538ef80f8cd07af82ce8dafd9118b378e6

libs/hwui/tests/common/scenes/SimpleColorMatrixAnimation.cpp

@@ -16,7 +16,8 @@
 
 #include "TestSceneBase.h"
 
-#include <SkColorMatrixFilter.h>
+#include <SkColorFilter.h>
+#include <SkColorMatrix.h>
 #include <SkGradientShader.h>
 
 class SimpleColorMatrixAnimation;