SKPs-as-benches in nanobench

This is meant to replace bench_pictures.

CQ_EXTRA_TRYBOTS=tryserver.skia:Build-Mac10.7-Clang-Arm7-Release-iOS-Trybot

BUG=skia:
R=bsalomon@google.com, jcgregorio@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/425393004
diff --git a/bench/SKPBench.h b/bench/SKPBench.h
new file mode 100644
index 0000000..9cc9192
--- /dev/null
+++ b/bench/SKPBench.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKPBench_DEFINED
+#define SKPBench_DEFINED
+
+#include "Benchmark.h"
+#include "SkCanvas.h"
+#include "SkPicture.h"
+
+/**
+ * Runs an SkPicture as a benchmark by repeatedly drawing it scaled inside a device clip.
+ */
+class SKPBench : public Benchmark {
+public:
+    SKPBench(const char* name, const SkPicture*, const SkIRect& devClip, SkScalar scale);
+
+protected:
+    virtual const char* onGetName() SK_OVERRIDE;
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE;
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE;
+    virtual SkIPoint onGetSize() SK_OVERRIDE;
+
+private:
+    SkAutoTUnref<const SkPicture> fPic;
+    const SkIRect fClip;
+    const SkScalar fScale;
+    SkString fName;
+
+    typedef Benchmark INHERITED;
+};
+
+#endif