Add unittests for HSTS decoding.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index 091518f55924b7245c7941f08030e45131f36f32..95cb962a718e6e08743a2fd4e24c28e5e23871b2 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -281,6 +281,7 @@ component("net") {
     "http/http_vary_data.h",
     "http/transport_security_state.cc",
     "http/transport_security_state.h",
+    "http/transport_security_state_source.h",
     "log/net_log.cc",
     "log/net_log.h",
     "log/net_log_capture_mode.cc",
@@ -4735,6 +4736,7 @@ test("net_unittests") {
     "//crypto:platform",
     "//crypto:test_support",
     "//net/base/registry_controlled_domains",
+    "//net/tools/transport_security_state_generator:generate_test_data",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/zlib",
@@ -5678,36 +5680,3 @@ fuzzer_test("net_spdy_session_fuzzer") {
   dict = "data/fuzzer_dictionaries/net_spdy_session_fuzzer.dict"
   seed_corpus = "data/fuzzer_data/net_spdy_session_fuzzer/"
 }
-
-if (host_toolchain == current_toolchain && !is_proto_quic) {
-  executable("transport_security_state_generator") {
-    sources = [
-      "tools/transport_security_state_generator/bit_writer.cc",
-      "tools/transport_security_state_generator/bit_writer.h",
-      "tools/transport_security_state_generator/cert_util.cc",
-      "tools/transport_security_state_generator/cert_util.h",
-      "tools/transport_security_state_generator/huffman/huffman_builder.cc",
-      "tools/transport_security_state_generator/huffman/huffman_builder.h",
-      "tools/transport_security_state_generator/pinset.cc",
-      "tools/transport_security_state_generator/pinset.h",
-      "tools/transport_security_state_generator/pinsets.cc",
-      "tools/transport_security_state_generator/pinsets.h",
-      "tools/transport_security_state_generator/preloaded_state_generator.cc",
-      "tools/transport_security_state_generator/preloaded_state_generator.h",
-      "tools/transport_security_state_generator/spki_hash.cc",
-      "tools/transport_security_state_generator/spki_hash.h",
-      "tools/transport_security_state_generator/transport_security_state_entry.cc",
-      "tools/transport_security_state_generator/transport_security_state_entry.h",
-      "tools/transport_security_state_generator/transport_security_state_generator.cc",
-      "tools/transport_security_state_generator/trie/trie_bit_buffer.cc",
-      "tools/transport_security_state_generator/trie/trie_bit_buffer.h",
-      "tools/transport_security_state_generator/trie/trie_writer.cc",
-      "tools/transport_security_state_generator/trie/trie_writer.h",
-    ]
-    deps = [
-      "//base",
-      "//crypto",
-      "//third_party/boringssl",
-    ]
-  }
-}