IWYU: 'core' target, files starting A-C.

TBR=reed@google.com
Verbal lgtm, does not change API.

Committed: https://skia.googlesource.com/skia/+/7403d87db8e43d4c2b5b25ac22a0ebc22bd09d69

Review URL: https://codereview.chromium.org/1265033002
diff --git a/tests/SurfaceTest.cpp b/tests/SurfaceTest.cpp
index 3d6e59e..192abd7 100644
--- a/tests/SurfaceTest.cpp
+++ b/tests/SurfaceTest.cpp
@@ -10,6 +10,7 @@
 #include "SkDevice.h"
 #include "SkImageEncoder.h"
 #include "SkImage_Base.h"
+#include "SkPath.h"
 #include "SkRRect.h"
 #include "SkSurface.h"
 #include "SkUtils.h"