[webnfc] Implement push() method in blink nfc module.

third_party/WebKit/public/platform/modules/nfc/WebNFCClient.h

-// 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.
-
-#ifndef WebNFCClient_h
-#define WebNFCClient_h
-
-#include "public/platform/WebCallbacks.h"
-
-#include <memory>
-
-namespace blink {
-
-enum class WebNFCError;
-struct WebNFCMessage;
-class WebNFCObserver;
-struct WebNFCPushOptions;
-enum class WebNFCPushTarget;
-struct WebNFCWatchOptions;
-
-// Success and failure callbacks for push, cancelPush, cancelWatch and cancelAllWatches methods.
-using WebNFCCallbacks = WebCallbacks<void, const WebNFCError&>;
-
-// Success and failure callbacks for watch method.
-using WebNFCWatchOptionsCallbacks = WebCallbacks<long, const WebNFCError&>;
-
-class WebNFCClient {
-public:
-    virtual ~WebNFCClient() { }
-
-    // Sets observer to the client so it can notify the observer about
-    // triggered NFC watch events.
-    virtual void setObserver(WebNFCObserver*) = 0;
-
-    // NFC interface methods:
-
-    // See https://w3c.github.io/web-nfc/#the-push-method
-    // WebNFCCallbacks ownership is transfered to the client.
-    virtual void push(const WebNFCMessage&, const WebNFCPushOptions&, WebNFCCallbacks*) = 0;
-
-    // See https://w3c.github.io/web-nfc/#cancelPush
-    // WebNFCCallbacks ownership is transfered to the client.
-    virtual void cancelPush(const WebNFCPushTarget&, WebNFCCallbacks*) = 0;
-
-    // See https://w3c.github.io/web-nfc/#the-watch-method
-    // WebNFCWatchOptionsCallbacks ownership is transfered to the client.
-    virtual void watch(const WebNFCWatchOptions&, WebNFCWatchOptionsCallbacks*) = 0;
-
-    // See https://w3c.github.io/web-nfc/#the-cancelwatch-method
-    // WebNFCCallbacks ownership is transfered to the client.
-    virtual void cancelWatch(long id, WebNFCCallbacks*) = 0;
-    virtual void cancelAllWatches(WebNFCCallbacks*) = 0;
-
-    // Methods that are required to implement suspended state.
-    // See https://w3c.github.io/web-nfc/#nfc-suspended
-    virtual void suspendNFCOperations() = 0;
-    virtual void resumeNFCOperations() = 0;
-};
-
-} // namespace blink
-
-#endif // WebNFCClient_h