Switch to using gray icon for Bluetooth imaging devices

All the other Bluetooth icons were switched to gray at some point in the
past, but we must have missed this one.

Bug: 63858978
Test: make RunSettingsRoboTests
Change-Id: I2ebefa42f3ecff8ae6d58f4bdb22dce39ae4dbd4

res/drawable/ic_bt_imaging.xml

@@ -1,27 +0,0 @@
-<!--
-     Copyright (C) 2016 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0"
-    android:tint="?android:attr/colorAccent">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M19,8L5,8c-1.66,0 -3,1.34 -3,3v6h4v4h12v-4h4v-6c0,-1.66 -1.34,-3
-            -3,-3zM16,19L8,19v-5h8v5zM19,12c-0.55,0 -1,-0.45 -1,-1s0.45,-1 1,-1 1,0.45 1,1 -0.45,1
-            -1,1zM18,3L6,3v4h12L18,3z"/>
-</vector>

src/com/android/settings/bluetooth/Utils.java

@@ -169,7 +169,7 @@ public final class Utils {
                                     R.string.bluetooth_talkback_input_peripheral));
 
                 case BluetoothClass.Device.Major.IMAGING:
-                    return new Pair<Integer, String>(R.drawable.ic_bt_imaging,
+                    return new Pair<Integer, String>(R.drawable.ic_settings_print,
                             r.getString(R.string.bluetooth_talkback_imaging));
 
                 default:

tests/robotests/src/com/android/settings/bluetooth/BluetoothDevicePreferenceTest.java

@@ -15,6 +15,7 @@
  */
 package com.android.settings.bluetooth;
 
+import android.bluetooth.BluetoothClass;
 import android.bluetooth.BluetoothDevice;
 import android.content.Context;
 import android.os.UserManager;
@@ -136,4 +137,13 @@ public class BluetoothDevicePreferenceTest {
 
         assertThat(mPreference.shouldHideSecondTarget()).isFalse();
     }
+
+    @Test
+    public void imagingDeviceIcon_isICSettingsPrint() {
+        when(mCachedBluetoothDevice.getBtClass()).thenReturn(
+                new BluetoothClass(BluetoothClass.Device.Major.IMAGING));
+        mPreference.onDeviceAttributesChanged();
+        assertThat(mPreference.getIcon()).isEqualTo(
+                mContext.getDrawable(R.drawable.ic_settings_print));
+    }
 }