[WebApk] Update verification keys.

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index 9905c4e4076a207f99485589cd05d63bbc57c7fb..b9714887114f3d04cbef76650238f5ab38840136 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -48,6 +48,17 @@ jinja_template("chrome_public_apk_manifest") {
   ]
 }
 
+java_cpp_template("chrome_webapk_signature_srcjar") {
+  sources = [
+    "java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHostSignature.template",
+  ]
+  package_name = "org/chromium/browser/webapps"
+  inputs = [
+    "webapk/channel_keys.h",
+  ]
+  defines = [ "channel_" + android_channel ]
+}
+
 # GYP: //chrome/android/chrome_apk.gyp:chrome_sync_shell_apk_manifest
 jinja_template("chrome_sync_shell_apk_manifest") {
   input = "java/AndroidManifest.xml"
@@ -190,6 +201,7 @@ android_library("chrome_java") {
 
   srcjar_deps = [
     ":chrome_android_java_enums_srcjar",
+    ":chrome_webapk_signature_srcjar",
     ":chrome_android_java_google_api_keys_srcjar",
     ":chrome_version_srcjar",
     ":resource_id_javagen",