Remove VisualBench and its Android implementation.

tools/VisualBench/VisualSKPBench.h

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- *
- */
-
-#ifndef VisualSKPBench_DEFINED
-#define VisualSKPBench_DEFINED
-
-#include "Benchmark.h"
-#include "SkCanvas.h"
-#include "SkPicture.h"
-
-/**
- * Runs an SkPicture as a benchmark by repeatedly drawing it
- */
-class VisualSKPBench : public Benchmark {
-public:
-    VisualSKPBench(const char* name, const SkPicture*);
-
-protected:
-    const char* onGetName() override;
-    const char* onGetUniqueName() override;
-    bool isSuitableFor(Backend backend) override;
-    SkIPoint onGetSize() override;
-    void onDraw(int loops, SkCanvas* canvas) override;
-
-private:
-    SkAutoTUnref<const SkPicture> fPic;
-    SkIRect fCullRect;
-    SkString fName;
-    SkString fUniqueName;
-
-    typedef Benchmark INHERITED;
-};
-
-#endif