Add unittests for certificate and file parsing.

net/tools/transport_security_state_generator/BUILD.gn

 # Copyright 2017 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.
 
 assert(current_toolchain == host_toolchain)
 
 source_set("transport_security_state_generator_sources") {
   sources = [
     "bit_writer.cc",
     "bit_writer.h",
     "cert_util.cc",
     "cert_util.h",
     "huffman/huffman_builder.cc",
     "huffman/huffman_builder.h",
+    "input_file_parsers.cc",
+    "input_file_parsers.h",
     "pinset.cc",
     "pinset.h",
     "pinsets.cc",
     "pinsets.h",
     "preloaded_state_generator.cc",
     "preloaded_state_generator.h",
     "spki_hash.cc",
     "spki_hash.h",
     "transport_security_state_entry.cc",
     "transport_security_state_entry.h",
     "trie/trie_bit_buffer.cc",
     "trie/trie_bit_buffer.h",
     "trie/trie_writer.cc",
     "trie/trie_writer.h",
   ]
   deps = [
     "//base",
     "//third_party/boringssl",
   ]
 }
 
 source_set("transport_security_state_generator_test_sources") {
   testonly = true
   sources = [
     "bit_writer_unittest.cc",
+    "cert_util_unittest.cc",
     "huffman/huffman_builder_unittest.cc",
+    "input_file_parsers_unittest.cc",
     "spki_hash_unittest.cc",
     "trie/trie_bit_buffer_unittest.cc",
   ]
   deps = [
     ":transport_security_state_generator_sources",
     "//base",
     "//base/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
+    "//third_party/boringssl",
   ]
 }
 
 executable("transport_security_state_generator") {
   sources = [
     "transport_security_state_generator.cc",
   ]
   deps = [
     ":transport_security_state_generator_sources",
     "//base",
     "//crypto",
     "//third_party/boringssl",
   ]
 }