[webnfc] Introduce NFC mojo service.

This patch adds NFC mojo service interface definition
that will be used to implement functionality required
by the W3C WebNFC module.

BUG=520391

Review URL: https://codereview.chromium.org/1486033002

Cr-Commit-Position: refs/heads/master@{#363455}

3 files changed, 102 insertions, 0 deletions

diff --git a/device/nfc/BUILD.gn b/device/nfc/BUILD.gn
index 340c924..5932bf6 100644
--- a/device/nfc/BUILD.gn
+++ b/device/nfc/BUILD.gn
@@ -2,6 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/features.gni")
+import("//mojo/public/tools/bindings/mojom.gni")
+
 static_library("nfc") {
   sources = [
     "nfc_adapter.cc",
@@ -40,3 +43,9 @@ static_library("nfc") {
     ]
   }
 }
+
+mojom("mojo_bindings") {
+  sources = [
+    "nfc.mojom",
+  ]
+}
diff --git a/device/nfc/nfc.gyp b/device/nfc/nfc.gyp
index ccd62b5..710bd22 100644
--- a/device/nfc/nfc.gyp
+++ b/device/nfc/nfc.gyp
@@ -50,5 +50,15 @@
         }],
       ],
     },
+    {
+      'target_name': 'device_nfc_mojo_bindings',
+      'type': 'static_library',
+      'includes': [
+        '../../third_party/mojo/mojom_bindings_generator.gypi',
+      ],
+      'sources': [
+        'nfc.mojom',
+      ],
+    },
   ],
 }
diff --git a/device/nfc/nfc.mojom b/device/nfc/nfc.mojom
new file mode 100644
index 0000000..72b3e9e
--- /dev/null
+++ b/device/nfc/nfc.mojom
@@ -0,0 +1,83 @@
+// 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.
+
+module device;
+
+enum NFCErrorType {
+  SECURITY,
+  NOT_SUPPORTED,
+  DEVICE_DISABLED,
+  NOT_FOUND,
+  INVALID_MESSAGE,
+  OPERATION_CANCELLED,
+  TIMER_EXPIRED,
+  CANNOT_CANCEL,
+  IO_ERROR
+};
+
+enum NFCRecordType {
+  EMPTY,
+  TEXT,
+  URL,
+  JSON,
+  OPAQUE
+};
+
+enum NFCPushTarget {
+  TAG,
+  PEER,
+  ANY
+};
+
+enum NFCWatchMode {
+  WEBNFC_ONLY,
+  ANY
+};
+
+struct NFCError {
+  NFCErrorType error_type;
+};
+
+struct NFCRecord {
+  NFCRecordType recordType;
+  string? mediaType;
+  array<uint8> data;
+};
+
+struct NFCMessage {
+  array<NFCRecord> data;
+  string? url;
+};
+
+struct NFCPushOptions {
+  NFCPushTarget target;
+  double timeout;
+  bool ignoreRead;
+};
+
+struct NFCRecordTypeFilter {
+  NFCRecordType recordType;
+};
+
+struct NFCWatchOptions {
+  string? url;
+  NFCRecordTypeFilter? recordFilter;
+  string? mediaType;
+  NFCWatchMode mode;
+};
+
+interface NFC {
+  SetClient(NFCClient client);
+  Push(NFCMessage message, NFCPushOptions? options) => (NFCError? error);
+  CancelPush(NFCPushTarget target) => (NFCError? error);
+  Watch(NFCWatchOptions options) => (uint32 id, NFCError? error);
+  CancelWatch (uint32 id) => (NFCError? error);
+  CancelAllWatches () => (NFCError? error);
+  SuspendNFCOperations();
+  ResumeNFCOperations();
+};
+
+interface NFCClient {
+  OnWatch(uint32 id, NFCMessage message);
+};