Add calls to the server to request WebAPK updates.

chrome/browser/android/webapk/webapk_update_manager.h

Index: chrome/browser/android/webapk/webapk_update_manager.h
diff --git a/chrome/browser/android/webapk/webapk_update_manager.h b/chrome/browser/android/webapk/webapk_update_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..7efde70edd94ac86142269cd587e81bef3283895
--- /dev/null
+++ b/chrome/browser/android/webapk/webapk_update_manager.h
@@ -0,0 +1,30 @@
+// 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.
+
+#ifndef CHROME_BROWSER_ANDROID_WEBAPK_WEBAPK_UPDATE_MANAGER_H_
+#define CHROME_BROWSER_ANDROID_WEBAPK_WEBAPK_UPDATE_MANAGER_H_
+
+#include "base/android/jni_android.h"
+#include "base/macros.h"
+
+// WebApkUpdateManager is the C++ counterpart of org.chromium.chrome.browser's
+// WebApkUpdateManager in Java. It calls WebApkInstaller to send an update
+// request to WebAPK Server.
+class WebApkUpdateManager {
+ public:
+  // Registers JNI hooks.
+  static bool Register(JNIEnv* env);
+
+  // Called after either a request to update the WebAPK has been sent, or the
+  // update process fails.
+  // |success| indicates whether the request was issued to the server. A "true"
+  // value of |success| does not guarantee that the WebAPK will be successfully
+  // updated.
+  static void OnBuiltWebApk(const std::string& webapk_package, bool success);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(WebApkUpdateManager);
+};
+
+#endif  // CHROME_BROWSER_ANDROID_WEBAPK_WEBAPK_UPDATE_MANAGER_H_