Fixing bug in RecordingImageBufferSurface::writePixels when using DisplayList2DCanvas

Source/platform/graphics/ImageBuffer.cpp

Index: Source/platform/graphics/ImageBuffer.cpp
diff --git a/Source/platform/graphics/ImageBuffer.cpp b/Source/platform/graphics/ImageBuffer.cpp
index 45b0e19af270b8c6827e738a1a733967283f6aac..6d997d37b09ffc368e0cffcc4e47efa54a01b52b 100644
--- a/Source/platform/graphics/ImageBuffer.cpp
+++ b/Source/platform/graphics/ImageBuffer.cpp
@@ -350,7 +350,7 @@ PassRefPtr<Uint8ClampedArray> ImageBuffer::getImageData(Multiply multiplied, con
     SkAlphaType alphaType = (multiplied == Premultiplied) ? kPremul_SkAlphaType : kUnpremul_SkAlphaType;
     SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), kRGBA_8888_SkColorType, alphaType);
 
-    m_surface->willReadback();
+    m_surface->willAccessPixels();
     context()->readPixels(info, result->data(), 4 * rect.width(), rect.x(), rect.y());
     return result.release();
 }
@@ -382,6 +382,8 @@ void ImageBuffer::putByteArray(Multiply multiplied, Uint8ClampedArray* source, c
     SkAlphaType alphaType = (multiplied == Premultiplied) ? kPremul_SkAlphaType : kUnpremul_SkAlphaType;
     SkImageInfo info = SkImageInfo::Make(sourceRect.width(), sourceRect.height(), kRGBA_8888_SkColorType, alphaType);
 
+    m_surface->willAccessPixels();
+
     context()->writePixels(info, srcAddr, srcBytesPerRow, destX, destY);
 }