Revert of [WebApk] Update verification keys.

chrome/android/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build_overrides/v8.gni")
 import("//chrome/android/chrome_public_apk_tmpl.gni")
 import("//chrome/common/features.gni")
 import("//chrome/version.gni")
@@ skipping 30 matching lines @@
 jinja_template("chrome_public_apk_manifest") {
   input = "java/AndroidManifest.xml"
   output = "$root_gen_dir/chrome_public_apk_manifest/AndroidManifest.xml"
   variables = chrome_public_jinja_variables
   variables += [
     "min_sdk_version=16",
     "target_sdk_version=23",
   ]
 }
 
-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"
   output = "$root_gen_dir/chrome_sync_shell_apk_manifest/AndroidManifest.xml"
   variables = chrome_sync_shell_jinja_variables
   variables += [
     "min_sdk_version=16",
     "target_sdk_version=22",
   ]
 }
@@ skipping 122 matching lines @@
     "//third_party/custom_tabs_client:custom_tabs_support_lib",
     "//third_party/gif_player:gif_player_java",
     "//third_party/jsr-305:jsr_305_javalib",
     "//third_party/leakcanary:leakcanary_java",
     "//ui/android:ui_java",
     google_play_services_library,
   ]
 
   srcjar_deps = [
     ":chrome_android_java_enums_srcjar",
-    ":chrome_webapk_signature_srcjar",
     ":chrome_android_java_google_api_keys_srcjar",
     ":chrome_version_srcjar",
     ":resource_id_javagen",
     "//base:base_build_config_gen",
     "//chrome:content_setting_javagen",
     "//chrome:content_settings_type_javagen",
     "//chrome:data_use_ui_message_enum_javagen",
     "//chrome:signin_metrics_enum_javagen",
   ]
 
@@ skipping 451 matching lines @@
 instrumentation_test_apk("chrome_sync_shell_test_apk") {
   apk_name = "ChromeSyncShellTest"
   apk_under_test = ":chrome_sync_shell_apk"
   android_manifest = chrome_sync_shell_test_apk_manifest
   android_manifest_dep = ":chrome_sync_shell_test_apk_manifest"
   deps = [
     ":chrome_sync_shell_test_apk_java",
   ]
   proguard_enabled = !is_java_debug
 }