Allow FreeType compilation and linkage from third_party on Windows

Create an OWNERS file for this directory and add myself as well. This is
preparation for using a shared FreeType between Blink and PDFium, but
not actually used as a depedency to any Windows targets yet.

BUG=700926

Review-Url: https://codereview.chromium.org/2781773003
Cr-Original-Commit-Position: refs/heads/master@{#460211}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: e15f5107bfba9080481fd78ed35c69c81fc41ac3

config/freetype/BUILD.gn

@@ -5,11 +5,11 @@
 import("//build/config/features.gni")
 
 group("freetype") {
-  if (is_chromecast || is_android) {
+  if (is_chromecast || is_android || is_win) {
     public_deps = [
       "//third_party/freetype",
     ]
-  } else {
+  } else if (is_linux) {
     public_configs = [ "//build/linux:freetype_from_pkgconfig" ]
   }
 }

config/freetype/OWNERS

@@ -0,0 +1,2 @@
+bungeman@chromium.org
+drott@chromium.org