instrument fingerprint settings

instrument visibility on all fingerprint views
  rename and delete action
  add fingerprint action is implicit in flow

Bug: 22951001
Change-Id: I53f048f479e24754972b801598d5da393ba9d716

src/com/android/settings/InstrumentedActivity.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+package com.android.settings;
+
+import com.android.internal.logging.MetricsLogger;
+
+import android.app.Activity;
+
+/**
+ * Instrumented activity that logs visibility state.
+ */
+public abstract class InstrumentedActivity extends Activity {
+    /**
+     * Declare the view of this category.
+     *
+     * Categories are defined in {@link com.android.internal.logging.MetricsLogger}
+     * or if there is no relevant existing category you may define one in
+     * {@link com.android.settings.InstrumentedFragment}.
+     */
+    protected abstract int getMetricsCategory();
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        MetricsLogger.visible(this, getMetricsCategory());
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        MetricsLogger.hidden(this, getMetricsCategory());
+    }
+}