Merge 85971 - https://bugs.webkit.org/show_bug.cgi?id=60398 (<rdar://problem/9307696>)

Merge 85971 - https://bugs.webkit.org/show_bug.cgi?id=60398 (<rdar://problem/9307696>)
REGRESSION (r81684?): cox.com sign in button is missing
        
Reviewed by Dan Bernstein.

Fix a typo in r81684 where the ascent was used in a comparison instead of boxHeight.
This restores the original behavior before the refactoring messed it up.

Source/WebCore: 

Added fast/inline/nested-top-alignment.html

* rendering/InlineFlowBox.cpp:
(WebCore::InlineFlowBox::computeLogicalBoxHeights):

LayoutTests: 

* fast/inline/nested-top-alignment.html: Added.
* platform/mac/fast/inline/nested-top-alignment-expected.png: Added.
* platform/mac/fast/inline/nested-top-alignment-expected.txt: Added.



TBR=levin@chromium.org
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=86492