Convert third_party source sets to static libraries.

third_party/cld_2/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 
 declare_args() {
   if (is_android || is_ios) {
     cld2_table_size = 0  # Small, accurate tables
   } else {
     cld2_table_size = 2  # Larger, more accurate tables
   }
 }
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("cld_2.gyp") ],
                           "scope",
                           [ "cld_2.gyp" ])
 
 config("cld2_data_warnings") {
   visibility = [ ":*" ]
   if (is_clang) {
     # The generated files don't have braces around subobject initializers.
     cflags = [ "-Wno-missing-braces" ]
   }
 }
 
-source_set("cld2_data") {
+static_library("cld2_data") {
   sources = gypi_values.cld2_data_sources
   if (cld2_table_size == 0) {
     sources += gypi_values.cld2_data_smallest_sources
   } else if (cld2_table_size == 2) {
     sources += gypi_values.cld2_data_largest_sources
   }
 
   include_dirs = [
     "src/internal",
     "src/public",
@@ skipping 30 matching lines @@
 
   public_deps = [
     ":cld2_data",
   ]
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
     ":cld2_warnings",
   ]
 }