Add js api for hosted/pacakged apps to request notification authorization

chrome/browser/extensions/app_notify_channel_setup.cc

+// Copyright (c) 2011 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/extensions/app_notify_channel_setup.h"
+
+#include "content/browser/browser_thread.h"
+
+AppNotifyChannelSetup::AppNotifyChannelSetup(
+    int request_id,
+    const std::string& client_id,
+    const GURL& requestor_url,
+    base::WeakPtr<AppNotifyChannelSetup::Delegate> delegate)
+    : request_id_(request_id),
+      client_id_(client_id),
+      requestor_url_(requestor_url),
+      delegate_(delegate) {}
+
+AppNotifyChannelSetup::~AppNotifyChannelSetup() {}
+
+void AppNotifyChannelSetup::Start() {
+  AddRef(); // Balanced in ReportResult.
+
+
+  // TODO(asargent) - We will eventually check here whether the user is logged
+  // in to the browser or not. If they are, we'll make a request to a server
+  // with the browser login credentials to get a channel id for the app to use
+  // in server pushed notifications. If they are not logged in, we'll prompt
+  // for login and if they sign in, then continue as in the first case.
+  // Otherwise we'll return an error message.
+
+  // For now, just reply with an error of 'not_implemented'.
+  BrowserThread::PostTask(
+      BrowserThread::UI,
+      FROM_HERE,
+      NewRunnableMethod(this,
+                        &AppNotifyChannelSetup::ReportResult,
+                        std::string(),
+                        std::string("not_implemented")));
+}
+
+void AppNotifyChannelSetup::ReportResult(
+    const std::string& channel_id,
+    const std::string& error) {
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  if (delegate_)
+    delegate_->AppNotifyChannelSetupComplete(request_id_, channel_id, error);
+  Release(); // Matches AddRef in Start.
+}