| Index: Source/core/rendering/RenderImage.cpp | 
| diff --git a/Source/core/rendering/RenderImage.cpp b/Source/core/rendering/RenderImage.cpp | 
| index 220591454d98302467e56f6170bf343a70fb6511..1e380c938a3c2fba87a07b35ea6d46e4eff80a82 100644 | 
| --- a/Source/core/rendering/RenderImage.cpp | 
| +++ b/Source/core/rendering/RenderImage.cpp | 
| @@ -59,6 +59,7 @@ RenderImage::RenderImage(Element* element) | 
| , m_needsToSetSizeForAltText(false) | 
| , m_didIncrementVisuallyNonEmptyPixelCount(false) | 
| , m_isGeneratedContent(false) | 
| +    , m_imageDevicePixelRatio(1.0f) | 
| { | 
| updateAltText(); | 
| } | 
|  |