Add missing header files to GN files

third_party/libaddressinput/BUILD.gn

Index: third_party/libaddressinput/BUILD.gn
diff --git a/third_party/libaddressinput/BUILD.gn b/third_party/libaddressinput/BUILD.gn
index e4e5381cb150297f335bd930291ec7fcb7e4e9be..69c9b80420bdfec7646a029cdf4fe09c11844b46 100644
--- a/third_party/libaddressinput/BUILD.gn
+++ b/third_party/libaddressinput/BUILD.gn
@@ -86,12 +86,18 @@ static_library("util") {
 static_library("libaddressinput") {
   sources = [
     "chromium/chrome_address_validator.cc",
+    "chromium/chrome_address_validator.h",
     "chromium/chrome_metadata_source.cc",
+    "chromium/chrome_metadata_source.h",
     "chromium/chrome_storage_impl.cc",
+    "chromium/chrome_storage_impl.h",
     "chromium/fallback_data_store.cc",
+    "chromium/fallback_data_store.h",
     "chromium/input_suggester.cc",
+    "chromium/input_suggester.h",
     "chromium/string_compare.cc",
     "chromium/trie.cc",
+    "chromium/trie.h",
     "src/cpp/src/address_input_helper.cc",
     "src/cpp/src/address_normalizer.cc",
     "src/cpp/src/address_problem.cc",
@@ -157,6 +163,7 @@ test("libaddressinput_unittests") {
     "chromium/chrome_storage_impl_unittest.cc",
     "chromium/fallback_data_store_unittest.cc",
     "chromium/storage_test_runner.cc",
+    "chromium/storage_test_runner.h",
     "chromium/string_compare_unittest.cc",
     "chromium/trie_unittest.cc",
     "src/cpp/test/address_data_test.cc",