Added rendering benchmark javascript hook

content/renderer/all_rendering_benchmarks.cc

Index: content/renderer/all_rendering_benchmarks.cc
diff --git a/content/renderer/all_rendering_benchmarks.cc b/content/renderer/all_rendering_benchmarks.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6039329c4d10942e5d621e1e756fb8300c4cb51b
--- /dev/null
+++ b/content/renderer/all_rendering_benchmarks.cc
@@ -0,0 +1,112 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/renderer/all_rendering_benchmarks.h"
+
+#include <string>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/compiler_specific.h"
+#include "base/time.h"
+#include "content/renderer/rendering_benchmark.h"
+#include "content/renderer/rendering_benchmark_results.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkDevice.h"
+#include "third_party/skia/include/utils/SkNullCanvas.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebCanvas.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebViewBenchmarkSupport.h"
+
+using base::TimeDelta;
+using base::TimeTicks;
+using WebKit::WebSize;
+using WebKit::WebCanvas;
+using WebKit::WebViewBenchmarkSupport;
+
+namespace {
+
+class CustomPaintBenchmark
+    : public content::RenderingBenchmark,
+      public WebViewBenchmarkSupport::PaintClient {
+ public:
+  CustomPaintBenchmark(const std::string& name,
+                       WebViewBenchmarkSupport::PaintMode paint_mode)
+      : content::RenderingBenchmark(name),
+        paint_mode_(paint_mode) { }
+
+  virtual WebCanvas* willPaint(const WebSize& size) OVERRIDE {
+    WebCanvas* canvas = createCanvas(size);
+    before_time_ = TimeTicks::Now();
+    return canvas;
+  }
+
+  virtual void didPaint(WebCanvas* canvas) OVERRIDE {
+    paint_time_total_ += (TimeTicks::Now() - before_time_);
+    delete canvas;
+  }
+
+  virtual void Run(content::RenderingBenchmarkResults* results,
+                   WebViewBenchmarkSupport* support) {
+    paint_time_total_ = TimeDelta();
+    support->paint(this, paint_mode_);
+    results->AddResult(name(),
+                       "paintTime",
+                       "s",
+                       paint_time_total_.InSecondsF());
+  }
+
+ private:
+  virtual WebCanvas* createCanvas(const WebSize& size) = 0;
+
+  TimeTicks before_time_;
+  TimeDelta paint_time_total_;
+  const WebViewBenchmarkSupport::PaintMode paint_mode_;
+};
+
+class BitmapCanvasPaintBenchmark : public CustomPaintBenchmark {
+ public:
+  BitmapCanvasPaintBenchmark(const std::string& name,
+                             WebViewBenchmarkSupport::PaintMode paint_mode)
+      : CustomPaintBenchmark(name, paint_mode) { }
+
+ private:
+  virtual WebCanvas* createCanvas(const WebSize& size) OVERRIDE {
+    SkDevice* device = new SkDevice(SkBitmap::kARGB_8888_Config,
+                                    size.width,
+                                    size.height,
+                                    false);
+    WebCanvas* canvas = new WebCanvas(device);
+    device->unref();
+    return canvas;
+  }
+};
+
+class NullCanvasPaintBenchmark : public CustomPaintBenchmark {
+ public:
+  NullCanvasPaintBenchmark(const std::string& name,
+                           WebViewBenchmarkSupport::PaintMode paint_mode)
+      : CustomPaintBenchmark(name, paint_mode) { }
+
+ private:
+  virtual WebCanvas* createCanvas(const WebSize& size) OVERRIDE {
+    return SkCreateNullCanvas();
+  }
+};
+}  // anonymous namespace
+
+namespace content {
+
+ScopedVector<RenderingBenchmark> AllRenderingBenchmarks() {
+  ScopedVector<RenderingBenchmark> benchmarks;
+  benchmarks.push_back(new BitmapCanvasPaintBenchmark(
+      "PaintEverythingToBitmap",
+      WebViewBenchmarkSupport::PaintModeEverything));
+  benchmarks.push_back(new NullCanvasPaintBenchmark(
+      "PaintEverythingToNullCanvas",
+      WebViewBenchmarkSupport::PaintModeEverything));
+  return benchmarks.Pass();
+}
+
+}  // namespace content