Clear webapp storage when site data is cleared

chrome/browser/android/webapps/webapp_registry.cc

Index: chrome/browser/android/webapps/webapp_registry.cc
diff --git a/chrome/browser/android/webapps/webapp_registry.cc b/chrome/browser/android/webapps/webapp_registry.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e4466a3ea2e2973da33aa73c84de845e16925cc0
--- /dev/null
+++ b/chrome/browser/android/webapps/webapp_registry.cc
@@ -0,0 +1,40 @@
+// Copyright 2015 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/webapps/webapp_registry.h"
+
+#include <jni.h>
+
+#include "base/android/jni_android.h"
+#include "base/callback.h"
+#include "chrome/browser/io_thread.h"
+#include "content/public/browser/browser_thread.h"
+#include "jni/WebappRegistry_jni.h"
+
+// static
+void WebappRegistry::UnregisterWebapps(
+    const base::Closure& callback) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  uintptr_t callback_pointer = reinterpret_cast<uintptr_t>(
+      new base::Closure(callback));
+
+  Java_WebappRegistry_unregisterAllWebapps(
+      env,
+      base::android::GetApplicationContext(),
+      callback_pointer);
+}
+
+// Callback used by Java when all web apps have been unregistered.
+void OnWebappsUnregistered(JNIEnv* env,
+                           const JavaParamRef<jclass>& klass,
+                           jlong jcallback) {
+  base::Closure* callback = reinterpret_cast<base::Closure*>(jcallback);
+  callback->Run();
+  delete callback;
+}
+
+// static
+bool WebappRegistry::RegisterWebappRegistry(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}