Clear LayoutSVGText's frame rect if no line boxes are produced

The frame rect is normally updated from
SVGRootInlineBox::computePerCharacterLayoutInformation(), but if the
children are empty, there'll be no such boxes and the frame rect won't
be updated.

BUG=474275

Review URL: https://codereview.chromium.org/1078193002

git-svn-id: svn://svn.chromium.org/blink/trunk@193559 bbb929c8-8fbe-4397-9dbb-9b2b20218538
2 files changed
tree: e0ab585aefecfdf87bf979b4c80e51d96abdedc4
  1. third_party/