Remove VisualBench and its Android implementation.

platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchActivity.java

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-package com.skia;
-
-import org.libsdl.app.SDLActivity;
-
-import android.content.Intent;
-
-public class VisualBenchActivity extends SDLActivity {
-  protected String[] getArguments() {
-    String flags = this.getIntent().getStringExtra("cmdLineFlags");
-    if (flags != null && !flags.isEmpty()) {
-        return flags.split("\\s+");
-    }
-    return new String[0];
-  }
-}