Use the URL passed to navigator.share().

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 193 matching lines @@
     "//third_party/android_tools:android_support_v7_appcompat_java",
     "//third_party/android_tools:android_support_v7_mediarouter_java",
     "//third_party/android_tools:android_support_v7_recyclerview_java",
     "//third_party/cacheinvalidation:cacheinvalidation_javalib",
     "//third_party/cacheinvalidation:cacheinvalidation_proto_java",
     "//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",
+    "//url/mojo:url_mojom_gurl_java",
     google_play_services_library,
   ]
 
   srcjar_deps = [
     ":chrome_android_java_enums_srcjar",
     ":chrome_android_java_google_api_keys_srcjar",
     ":chrome_version_srcjar",
     ":resource_id_javagen",
     "//base:base_build_config_gen",
     "//chrome:content_setting_javagen",
@@ skipping 448 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
 }