[DeviceService] Move //device/nfc to be part of the internal impl of Device Service

device/nfc/android/java/src/org/chromium/device/nfc/NfcTagHandler.java

Index: device/nfc/android/java/src/org/chromium/device/nfc/NfcTagHandler.java
diff --git a/device/nfc/android/java/src/org/chromium/device/nfc/NfcTagHandler.java b/device/nfc/android/java/src/org/chromium/device/nfc/NfcTagHandler.java
deleted file mode 100644
index 9e8b9c465a9a1d5e4e6827607a89697d10ff8fd6..0000000000000000000000000000000000000000
--- a/device/nfc/android/java/src/org/chromium/device/nfc/NfcTagHandler.java
+++ /dev/null
@@ -1,157 +0,0 @@
-// 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.
-
-package org.chromium.device.nfc;
-
-import android.nfc.FormatException;
-import android.nfc.NdefMessage;
-import android.nfc.Tag;
-import android.nfc.TagLostException;
-import android.nfc.tech.Ndef;
-import android.nfc.tech.NdefFormatable;
-import android.nfc.tech.TagTechnology;
-
-import java.io.IOException;
-
-/**
- * Utility class that provides I/O operations for NFC tags.
- */
-public class NfcTagHandler {
-    private final TagTechnology mTech;
-    private final TagTechnologyHandler mTechHandler;
-    private boolean mWasConnected;
-
-    /**
-     * Factory method that creates NfcTagHandler for a given NFC Tag.
-     *
-     * @param tag @see android.nfc.Tag
-     * @return NfcTagHandler or null when unsupported Tag is provided.
-     */
-    public static NfcTagHandler create(Tag tag) {
-        if (tag == null) return null;
-
-        Ndef ndef = Ndef.get(tag);
-        if (ndef != null) return new NfcTagHandler(ndef, new NdefHandler(ndef));
-
-        NdefFormatable formattable = NdefFormatable.get(tag);
-        if (formattable != null) {
-            return new NfcTagHandler(formattable, new NdefFormattableHandler(formattable));
-        }
-
-        return null;
-    }
-
-    /**
-     * NdefFormatable and Ndef interfaces have different signatures for operating with NFC tags.
-     * This interface provides generic methods.
-     */
-    private interface TagTechnologyHandler {
-        public void write(NdefMessage message)
-                throws IOException, TagLostException, FormatException, IllegalStateException;
-        public NdefMessage read()
-                throws IOException, TagLostException, FormatException, IllegalStateException;
-    }
-
-    /**
-     * Implementation of TagTechnologyHandler that uses Ndef tag technology.
-     * @see android.nfc.tech.Ndef
-     */
-    private static class NdefHandler implements TagTechnologyHandler {
-        private final Ndef mNdef;
-
-        NdefHandler(Ndef ndef) {
-            mNdef = ndef;
-        }
-
-        @Override
-        public void write(NdefMessage message)
-                throws IOException, TagLostException, FormatException, IllegalStateException {
-            mNdef.writeNdefMessage(message);
-        }
-
-        @Override
-        public NdefMessage read()
-                throws IOException, TagLostException, FormatException, IllegalStateException {
-            return mNdef.getNdefMessage();
-        }
-    }
-
-    /**
-     * Implementation of TagTechnologyHandler that uses NdefFormatable tag technology.
-     * @see android.nfc.tech.NdefFormatable
-     */
-    private static class NdefFormattableHandler implements TagTechnologyHandler {
-        private final NdefFormatable mNdefFormattable;
-
-        NdefFormattableHandler(NdefFormatable ndefFormattable) {
-            mNdefFormattable = ndefFormattable;
-        }
-
-        @Override
-        public void write(NdefMessage message)
-                throws IOException, TagLostException, FormatException, IllegalStateException {
-            mNdefFormattable.format(message);
-        }
-
-        @Override
-        public NdefMessage read() throws FormatException {
-            return NfcTypeConverter.emptyNdefMessage();
-        }
-    }
-
-    protected NfcTagHandler(TagTechnology tech, TagTechnologyHandler handler) {
-        mTech = tech;
-        mTechHandler = handler;
-    }
-
-    /**
-     * Connects to NFC tag.
-     */
-    public void connect() throws IOException, TagLostException {
-        if (!mTech.isConnected()) {
-            mTech.connect();
-            mWasConnected = true;
-        }
-    }
-
-    /**
-     * Checks if NFC tag is connected.
-     */
-    public boolean isConnected() {
-        return mTech.isConnected();
-    }
-
-    /**
-     * Closes connection.
-     */
-    public void close() throws IOException {
-        mTech.close();
-    }
-
-    /**
-     * Writes NdefMessage to NFC tag.
-     */
-    public void write(NdefMessage message)
-            throws IOException, TagLostException, FormatException, IllegalStateException {
-        mTechHandler.write(message);
-    }
-
-    public NdefMessage read()
-            throws IOException, TagLostException, FormatException, IllegalStateException {
-        return mTechHandler.read();
-    }
-
-    /**
-     * If tag was previously connected and subsequent connection to the same tag fails, consider
-     * tag to be out of range.
-     */
-    public boolean isTagOutOfRange() {
-        try {
-            connect();
-        } catch (IOException e) {
-            return mWasConnected;
-        }
-        return false;
-    }
-}