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/src/ports/SkFontHost_FreeType.cpp b/src/ports/SkFontHost_FreeType.cpp
index 6f235ed..63f598f 100644
--- a/src/ports/SkFontHost_FreeType.cpp
+++ b/src/ports/SkFontHost_FreeType.cpp
@@ -19,6 +19,7 @@
 #include "SkMatrix22.h"
 #include "SkMutex.h"
 #include "SkOTUtils.h"
+#include "SkPath.h"
 #include "SkScalerContext.h"
 #include "SkStream.h"
 #include "SkString.h"