2. Make a placeholder splittable only if the out-of-flow is.
3. If a float placeholder is not splittable then place it immediately
instead of failing to reflow it because it can't be split.
b=337419 (Patch B) r+sr=roc
git-svn-id: svn://10.0.0.236/trunk@208285 18797224-902f-48f8-a5cc-f745e15eee43