arc: bluetooth: Add SDP host side support

components/arc/common/bluetooth.mojom

 // 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.
 
 module arc.mojom;
 
 [Extensible]
 enum BluetoothAdapterState {
   OFF = 0,
   ON
@@ skipping 207 matching lines @@
   uint16 start_handle;
   uint16 end_handle;
 
   /*
    * If |type| is |BTGATT_DB_CHARACTERISTIC|, this contains the properties of
    * the characteristic.
    */
   uint8 properties;
 };
 
+// Bluetooth SDP types
+[Extensible]
+enum BluetoothSdpAttrType {
+  NULLTYPE = 0,
+  UINT,
+  INT,
+  UUID,
+  STRING,
+  BOOL,
+  SEQUENCE,
+  URL,
+};
+
+struct BluetoothSdpServiceAttr {
+  BluetoothSdpAttrType type;
+  uint32 type_size;
+  array<uint8> value;

[rickyz (no longer on Chrome), 2016/08/16 23:55:07]

Why do different integer types need to be stuffed into a byte array? Could this
use optional fields for the various attr types instead?

[rickyz (no longer on Chrome), 2016/08/17 00:20:30]

Correction: It turns out mojo support unions - for example:
https://cs.chromium.org/chromium/src/cc/ipc/quads.mojom?q=file:mojom+union&sq...

[Miao, 2016/08/17 14:30:20]

The original plan is to use base::ListValue to pass the variant, but since
Android side support is not there yet. I used a byte array here, so we can make
less changes to adopt base::ListValue when it is ready. But since the uprev may
take a while, I can use union if you have strong opinion about this.

[rickyz (no longer on Chrome), 2016/08/17 18:54:54]

Yeah, I think a union would be preferable here, along with a TODO to remind us
to switch over once the uprev happens. Glad there's a nicer solution coming.

+  array<BluetoothSdpServiceAttr> sequence;
+};
+
+struct BluetoothSdpRecord {
+  map<uint16, BluetoothSdpServiceAttr> attrs;
+};
+
+struct BluetoothCreateSdpRecordResult {
+  BluetoothStatus status;
+  uint32 service_handle;
+};
+
 interface BluetoothHost {
   EnableAdapter@0() => (BluetoothAdapterState state);
   DisableAdapter@1() => (BluetoothAdapterState state);
   GetAdapterProperty@2(BluetoothPropertyType type);
   SetAdapterProperty@3(BluetoothProperty property);
   GetRemoteDeviceProperty@4(BluetoothAddress remote_addr,
                             BluetoothPropertyType type);
   SetRemoteDeviceProperty@5(BluetoothAddress remote_addr,
                             BluetoothProperty property);
   GetRemoteServiceRecord@6(BluetoothAddress remote_addr,
@@ skipping 71 matching lines @@
       => (BluetoothGattStatus status);
   [MinVersion=3] StopService@34(int32 service_handle)
       => (BluetoothGattStatus status);
   [MinVersion=3] DeleteService@35(int32 service_handle)
       => (BluetoothGattStatus status);
   [MinVersion=3] SendIndication@36(int32 attribute_handle,
                                    BluetoothAddress address,
                                    bool confirm,
                                    array<uint8> value)
       => (BluetoothGattStatus status);
+
+  // Bluetooth SDP functions
+  [MinVersion=4] GetSdpRecords@37(BluetoothAddress remote_addr,
+                                  BluetoothUUID target_uuid);
+  [MinVersion=4] CreateSdpRecord@38(BluetoothSdpRecord record)
+      => (BluetoothCreateSdpRecordResult result);
+  [MinVersion=4] RemoveSdpRecord@39(uint32 service_handle)
+      => (BluetoothStatus status);
 };
 
 interface BluetoothInstance {
   Init@0(BluetoothHost host_ptr);
 
   OnAdapterProperties@1(BluetoothStatus status,
                         array<BluetoothProperty> properties);
   OnRemoteDeviceProperties@2(BluetoothStatus status,
                              BluetoothAddress address,
                              array<BluetoothProperty> properties);
@@ skipping 31 matching lines @@
   [MinVersion=3] RequestGattRead@14(BluetoothAddress address,
                                     int32 attribute_handle,
                                     int32 offset,
                                     bool is_long)
       => (BluetoothGattStatus status, array<uint8> value);
   [MinVersion=3] RequestGattWrite@15(BluetoothAddress address,
                                      int32 attribute_handle,
                                      int32 offset,
                                      array<uint8> value)
       => (BluetoothGattStatus status);
+
+  // Bluetooth SDP function
+  [MinVersion=4] OnGetSdpRecords@16(BluetoothStatus status,
+                                    BluetoothAddress remove_addr,
+                                    BluetoothUUID target_uuid,
+                                    array<BluetoothSdpRecord> records);
 };