GN: build sfntly, icu, harfbuzz

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 0780f1b52298c64c964ccde142a5c01902bf2b13..b6f7a8b6e9428ca5deb0f151c37b34204edcc6a4 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -65,6 +65,8 @@ config("skia_private") {
     "SK_HAS_PNG_LIBRARY",
     "SK_HAS_WEBP_LIBRARY",
 
+    "SK_SFNTLY_SUBSETTER=\"font_subsetter.h\"", # TODO(halcanary): remove
+
     "TURBO_HAS_565",
     "TURBO_HAS_CROP",
     "TURBO_HAS_SKIP",
@@ -172,6 +174,7 @@ component("skia") {
     "//third_party/libpng",
     "//third_party/libwebp",
     "//third_party/zlib",
+    "//third_party/sfntly",

[mtklein, 2016/08/03 20:06:50]

please run gn fmt --in-place on all your changed files

[hal.canary, 2016/08/03 21:35:59]

Done.

   ]
 
   libs = [ "pthread" ]
@@ -543,4 +546,18 @@ if (!is_component_build) {  # Our test tools use many non-SK_API APIs...
     ]
     testonly = true
   }
+
+
+  executable("sktexttopdf") {
+    sources = [
+      "tools/using_skia_and_harfbuzz.cpp",
+      "tools/SkShaper_harfbuzz.cpp",
+    ]
+    deps = [
+      ":skia",
+      "//third_party/harfbuzz",
+    ]
+    testonly = true
+  }
+
 }