Isolated elements at end of line are not being correctly treated

When "end of line" is an isolated element, InlineIterator::increment is wrongly
moving the iterator to the next object.
This patch fixes the behavior verifying if endOfLine is the current isolated object 
or a child of it.
Now the worst case scenario for Inline::increment happens when endOfLine is the isolated element.

BUG=326860
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=164123

[igoroliveira, 2013-12-10 23:20:28]

On 2013/12/10 23:19:11, igoroliveira wrote:

Sadly the code increases the complexity of InlineIterator::increment, i am
working on another CL to try to improve it a bit, however it needs lot of work
on BidiResolver

[eseidel, 2013-12-10 23:31:53]

Levi is probably your best reviewer, but I believe he's on vacation this week.

[eseidel, 2013-12-18 21:03:52]

lgtm

[commit-bot: I haz the power, 2013-12-18 21:04:10]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/igor.o@sisa.samsung.com/103823005/1

[commit-bot: I haz the power, 2013-12-18 22:28:48]

Change committed as 164123