[chromium] Use const SkBitmap& parameter for WebLayerTreeView::setFontAtlas
https://bugs.webkit.org/show_bug.cgi?id=101016

Reviewed by Adrienne Walker.

Passing SkBitmap by value requires including SkBitmap.h, which is tricky for some clients to do since it
requires having the rest of skia's headers on the include path and setting up the correct config to set
preprocessor defines.  Also shuffles the parameter order around to make rolling easier since you can't override
just by const ref-ness.

* chromium/public/WebLayerTreeView.h:
(WebKit::WebLayerTreeView::setFontAtlas):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk/Source/Platform/chromium/public@133516 268f45cc-cd09-0410-ab3c-d52691b4dbfc