Invalidate the frame view when changing the background image of the document or body.

Source/core/rendering/RenderView.cpp

Index: Source/core/rendering/RenderView.cpp
diff --git a/Source/core/rendering/RenderView.cpp b/Source/core/rendering/RenderView.cpp
index a76de7ab55300aedd9723edafb09f725a6bc2fcd..909b9bdb36c095e577d17599206967d299093f0b 100644
--- a/Source/core/rendering/RenderView.cpp
+++ b/Source/core/rendering/RenderView.cpp
@@ -179,7 +179,7 @@ bool RenderView::shouldDoFullPaintInvalidationForNextLayout() const
             if (!m_compositor || !m_compositor->needsFixedRootBackgroundLayer(layer())) {
                 if (backgroundRenderer->style()->hasFixedBackgroundImage()
                     && mustInvalidateFillLayersPaintOnHeightChange(backgroundRenderer->style()->backgroundLayers()))
-                return true;
+                    return true;
             }
         }
     }