Adds a method to track camera usages

This CL adds a new method to AppOpsManager for tracking apps' camera
usages.

Bug: 205156620
Bug: 216362856
Test: Successful build
Change-Id: I1bb424208ad422c462c17b822b72b5e87035e061

packages/SettingsLib/src/com/android/settingslib/applications/RecentAppOpsAccess.java

@@ -51,6 +51,9 @@ public class RecentAppOpsAccess {
     private static final int[] MICROPHONE_OPS = new int[]{
             AppOpsManager.OP_RECORD_AUDIO,
     };
+    private static final int[] CAMERA_OPS = new int[]{
+            AppOpsManager.OP_CAMERA,
+    };
 
 
     private static final String TAG = RecentAppOpsAccess.class.getSimpleName();
@@ -98,6 +101,13 @@ public class RecentAppOpsAccess {
         return new RecentAppOpsAccess(context, MICROPHONE_OPS);
     }
 
+    /**
+     * Creates an instance of {@link RecentAppOpsAccess} for camera access.
+     */
+    public static RecentAppOpsAccess createForCamera(Context context) {
+        return new RecentAppOpsAccess(context, CAMERA_OPS);
+    }
+
     /**
      * Fills a list of applications which queried for access recently within specified time.
      * Apps are sorted by recency. Apps with more recent accesses are in the front.