Remove incorrect check for image introduced by crrev.com/481753002
Remove incorrect check for image introduced by crrev.com/481753002

This was a copy-and-paste error in crrev.com/481753002 - we only need to adjust the size of images that are actual RenderImages.

BUG=441004

Review URL: https://codereview.chromium.org/795273002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@187053 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs