arc: bluetooth: It's impossible to trigger OnAclStateChanged

Deadcode

Bug: 111367421
Test: CQ
Change-Id: I51d4f187aacd6f9594f74c612ca49d1e99d62a09
Reviewed-on: https://chromium-review.googlesource.com/c/1338089Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Commit-Queue: Qiyu Hu <qiyuh@google.com>
Cr-Commit-Position: refs/heads/master@{#609839}

components/arc/common/bluetooth.mojom

@@ -402,7 +402,7 @@ interface BluetoothHost {
 };
 
 // Next Method ID: 22
-// Deprecated Method ID: 2
+// Deprecated Method ID: 2, 6
 interface BluetoothInstance {
   // DEPRECATED: Please use Init@18 instead.
   InitDeprecated@0(BluetoothHost host_ptr);
@@ -417,9 +417,6 @@ interface BluetoothInstance {
   OnBondStateChanged@5(BluetoothStatus status,
                        BluetoothAddress remote_addr,
                        BluetoothBondState state);
-  OnAclStateChanged@6(BluetoothStatus status,
-                      BluetoothAddress remote_addr,
-                      BluetoothAclState state);
 
   // Bluetooth Gatt Client callbacks
   // TODO(b/111367421): Remove this when no active device running Android N.

components/arc/test/fake_bluetooth_instance.cc

@@ -59,11 +59,6 @@ void FakeBluetoothInstance::OnBondStateChanged(
     mojom::BluetoothAddressPtr remote_addr,
     mojom::BluetoothBondState state) {}
 
-void FakeBluetoothInstance::OnAclStateChanged(
-    mojom::BluetoothStatus status,
-    mojom::BluetoothAddressPtr remote_addr,
-    mojom::BluetoothAclState state) {}
-
 void FakeBluetoothInstance::OnLEDeviceFoundForN(
     mojom::BluetoothAddressPtr addr,
     int32_t rssi,

components/arc/test/fake_bluetooth_instance.h

@@ -83,9 +83,6 @@ class FakeBluetoothInstance : public mojom::BluetoothInstance {
   void OnBondStateChanged(mojom::BluetoothStatus status,
                           mojom::BluetoothAddressPtr remote_addr,
                           mojom::BluetoothBondState state) override;
-  void OnAclStateChanged(mojom::BluetoothStatus status,
-                         mojom::BluetoothAddressPtr remote_addr,
-                         mojom::BluetoothAclState state) override;
   void OnLEDeviceFoundForN(
       mojom::BluetoothAddressPtr addr,
       int32_t rssi,