Use newImageSnapshot() to get an image from a Canvas

Source/platform/graphics/BitmapPattern.h

Index: Source/platform/graphics/BitmapPattern.h
diff --git a/Source/platform/graphics/BitmapPattern.h b/Source/platform/graphics/BitmapPattern.h
new file mode 100644
index 0000000000000000000000000000000000000000..ca72c9d23d473b67f947ced776bd6b65a8a1f9eb
--- /dev/null
+++ b/Source/platform/graphics/BitmapPattern.h
@@ -0,0 +1,35 @@
+// Copyright 2014 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.
+
+#ifndef BitmapPattern_h
+#define BitmapPattern_h
+
+#include "platform/graphics/BitmapPatternBase.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT BitmapPattern : public BitmapPatternBase {
+public:
+    static PassRefPtr<BitmapPattern> create(PassRefPtr<Image> tileImage, RepeatMode repeatMode)
+    {
+        return adoptRef(new BitmapPattern(tileImage, repeatMode));
+    }
+
+    virtual ~BitmapPattern() { }
+
+    virtual PassRefPtr<SkShader> createShader() OVERRIDE;
+
+protected:
+    virtual SkImageInfo getBitmapInfo() OVERRIDE;
+    virtual void drawBitmapToCanvas(SkCanvas&, SkPaint&) OVERRIDE;
+
+private:
+    BitmapPattern(PassRefPtr<Image>, RepeatMode);
+
+    RefPtr<NativeImageSkia> m_tileImage;
+};
+
+} // namespace
+
+#endif