Remove RenderImage::styleDidChange.

This simply calls its superclass since about four months ago.
https://codereview.chromium.org/129873009/

Review URL: https://codereview.chromium.org/339753002

git-svn-id: svn://svn.chromium.org/blink/trunk@176260 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/rendering/RenderImage.cpp

@@ -141,11 +141,6 @@ bool RenderImage::setImageSizeForAltText(ImageResource* newImage /* = 0 */)
     return true;
 }
 
-void RenderImage::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
-{
-    RenderReplaced::styleDidChange(diff, oldStyle);
-}
-
 void RenderImage::imageChanged(WrappedImagePtr newImage, const IntRect* rect)
 {
     if (documentBeingDestroyed())

third_party/WebKit/Source/core/rendering/RenderImage.h

@@ -69,8 +69,6 @@ protected:
     virtual RenderBox* embeddedContentBox() const OVERRIDE FINAL;
     virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const OVERRIDE FINAL;
 
-    virtual void styleDidChange(StyleDifference, const RenderStyle*) OVERRIDE FINAL;
-
     virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) OVERRIDE;
 
     void paintIntoRect(GraphicsContext*, const LayoutRect&);