Publicly depend on fontmgrs.

When a fontmgr is included in the Skia build any headers it provides
(like through public) are also public Skia headers.

Change-Id: Ibf18819a956e626a925f83a4f8ebab90978ff9a9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/295818
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>

Author: Ben Wagner

BUILD.gn

@@ -918,6 +918,16 @@ component("skia") {
   configs += skia_library_configs
 
   public_deps = [
+    ":fontmgr_FontConfigInterface",
+    ":fontmgr_android",
+    ":fontmgr_custom_directory",
+    ":fontmgr_custom_embedded",
+    ":fontmgr_custom_empty",
+    ":fontmgr_fontconfig",
+    ":fontmgr_fuchsia",
+    ":fontmgr_mac_ct",
+    ":fontmgr_win",
+    ":fontmgr_win_gdi",
     ":gpu",
     ":pdf",
     ":skcms",
@@ -931,17 +941,7 @@ component("skia") {
     ":avx",
     ":compile_processors",
     ":crc32",
-    ":fontmgr_FontConfigInterface",
-    ":fontmgr_android",
-    ":fontmgr_custom_directory",
-    ":fontmgr_custom_embedded",
-    ":fontmgr_custom_empty",
     ":fontmgr_factory",
-    ":fontmgr_fontconfig",
-    ":fontmgr_fuchsia",
-    ":fontmgr_mac_ct",
-    ":fontmgr_win",
-    ":fontmgr_win_gdi",
     ":gif",
     ":heif",
     ":hsw",