Image width set in percentages changed to be in pixels after drag and drop in chrome

[noam]

Summary: When dragging an image with width style in percentage in chrome, the width is changed to be in pixels.

Reproduction:

• Open standard demo in chrome browser
• Add an image and set it's width property to be in percentages, for example 50%
• Drag the image to a new position

Result: The width value is changed to be pixels

I think this is related to issue #9998, I beilive this is due to content editable behavior in chrome

[Jakub Ś]

First occurrence of this problem can be found in CKEditor 3.5.3 rev. [6564] height is changed on drag from % to px.

From CKEditor 4.1 both width and height are changed from % to px on drag. Problem can be reproduced on Blink and Safari 5 on Win but not Safari 7 on Mac