skia expects to be initialized before it can be used. This must be done if serializing SkPicture, w…

content/renderer/gpu/gpu_benchmarking_extension.cc

 // 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/gpu/gpu_benchmarking_extension.h"
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_vector.h"
 #include "base/string_number_conversions.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/renderer/all_rendering_benchmarks.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/renderer/rendering_benchmark.h"
 #include "content/renderer/rendering_benchmark_results.h"
+#include "third_party/skia/include/core/SkGraphics.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "third_party/skia/include/core/SkStream.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebRenderingStats.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebViewBenchmarkSupport.h"
 #include "v8/include/v8.h"
 
 using WebKit::WebCanvas;
 using WebKit::WebFrame;
 using WebKit::WebPrivatePtr;
 using WebKit::WebRenderingStats;
 using WebKit::WebSize;
 using WebKit::WebView;
 using WebKit::WebViewBenchmarkSupport;
 
 const char kGpuBenchmarkingExtensionName[] = "v8/GpuBenchmarking";
 
 namespace {
 
+// Always called on the main render thread.
+// Does not need to be thread-safe.
+void InitSkGraphics() {
+  static bool init = false;
+  if (!init) {
+    SkGraphics::Init();
+    init = true;
+  }
+}
+
 class SkPictureRecorder : public WebViewBenchmarkSupport::PaintClient {
  public:
   explicit SkPictureRecorder(const FilePath& dirpath)
       : dirpath_(dirpath),
         layer_id_(0) {
+    // Let skia register known effect subclasses. This basically enables
+    // reflection on those subclasses required for picture serialization.
+    InitSkGraphics();
   }
 
   virtual WebCanvas* willPaint(const WebSize& size) {
     return picture_.beginRecording(size.width, size.height);
   }
 
   virtual void didPaint(WebCanvas* canvas) {
     DCHECK(canvas == picture_.getRecordingCanvas());
     picture_.endRecording();
     // Serialize picture to file.
@@ skipping 245 matching lines @@
 
     return results.results_array();
   }
 };
 
 v8::Extension* GpuBenchmarkingExtension::Get() {
   return new GpuBenchmarkingWrapper();
 }
 
 }  // namespace content