Add a flag in WebAPK's proto when the Web App Manifest is no longer available.

chrome/browser/android/webapk/webapk_installer_unittest.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/android/webapk/webapk_installer.h"
 
 #include <jni.h>
 #include <memory>
 #include <string>
 
@@ skipping 89 matching lines @@
         base::Bind(&WebApkInstallerRunner::OnCompleted,
                    base::Unretained(this)));
     Run();
   }
 
   void RunUpdateWebApk() {
     const std::string kIconMurmur2Hash = "0";
     const int kWebApkVersion = 1;
 
     WebApkInstaller* installer = CreateWebApkInstaller();
+    std::map<std::string, std::string> icon_url_hash_map;
+    icon_url_hash_map[best_icon_url_.spec()] = kIconMurmur2Hash;
 
     installer->UpdateAsyncWithURLRequestContextGetter(
         url_request_context_getter_.get(),
         base::Bind(&WebApkInstallerRunner::OnCompleted, base::Unretained(this)),
-        kIconMurmur2Hash,
         kDownloadedWebApkPackageName,
-        kWebApkVersion);
+        kWebApkVersion,
+        false /* stale_manifest */,
+        icon_url_hash_map);
 
     Run();
   }
 
   WebApkInstaller* CreateWebApkInstaller() {
     ShortcutInfo info(GURL::EmptyGURL());
     info.best_icon_url = best_icon_url_;
 
     // WebApkInstaller owns itself.
     WebApkInstaller* installer = new TestWebApkInstaller(info, SkBitmap());
@@ skipping 197 matching lines @@
   runner->RunInstallWebApk();
   EXPECT_FALSE(runner->success());
 }
 
 // Test update succeeding.
 TEST_F(WebApkInstallerTest, UpdateSuccess) {
   std::unique_ptr<WebApkInstallerRunner> runner = CreateWebApkInstallerRunner();
   runner->RunUpdateWebApk();
   EXPECT_TRUE(runner->success());
 }