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..3829e073ad4143cb6a806017b3b29b180c82cb39
--- /dev/null
+++ b/chrome/browser/android/webapps/webapp_registry.cc
@@ -0,0 +1,34 @@
+// 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::UnregisterWebappsOnIOThread(
+    const base::Closure& callback) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_WebappRegistry_unregisterAllWebappsInBackground(
+      env,
+      base::android::GetApplicationContext());
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::UI,
+      FROM_HERE,
+      callback);
+}
+
+// static
+bool WebappRegistry::RegisterWebappRegistry(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}