Add Digital Asset Links verification for postMessage API

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index fbf1c5177ab3dcdc02d9efe0f791ba924d9fbaaf..f124951bd10337039b0ffa0656f1322b56eaf955 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -2723,6 +2723,8 @@ split_static_library("browser") {
       "android/contextualsearch/resolved_search_term.h",
       "android/cookies/cookies_fetcher.cc",
       "android/cookies/cookies_fetcher.h",
+      "android/customtabs/origin_verifier.cc",
+      "android/customtabs/origin_verifier.h",
       "android/data_usage/data_use_matcher.cc",
       "android/data_usage/data_use_matcher.h",
       "android/data_usage/data_use_tab_helper.cc",
@@ -2747,6 +2749,8 @@ split_static_library("browser") {
       "android/devtools_manager_delegate_android.h",
       "android/devtools_server.cc",
       "android/devtools_server.h",
+      "android/digital_asset_links/digital_asset_links_handler.cc",
+      "android/digital_asset_links/digital_asset_links_handler.h",
       "android/document/document_web_contents_delegate.cc",
       "android/document/document_web_contents_delegate.h",
       "android/dom_distiller/distiller_ui_handle_android.cc",
@@ -4097,6 +4101,7 @@ if (is_android) {
       "../android/java/src/org/chromium/chrome/browser/contextualsearch/CtrSuppression.java",
       "../android/java/src/org/chromium/chrome/browser/cookies/CookiesFetcher.java",
       "../android/java/src/org/chromium/chrome/browser/crash/MinidumpUploadService.java",
+      "../android/java/src/org/chromium/chrome/browser/customtabs/OriginVerifier.java",
       "../android/java/src/org/chromium/chrome/browser/customtabs/ResourcePrefetchPredictor.java",
       "../android/java/src/org/chromium/chrome/browser/database/SQLiteCursor.java",
       "../android/java/src/org/chromium/chrome/browser/datausage/DataUseTabUIManager.java",