Source/WebCore: <rdar://problem/10561285> REGRESSION (r80438): First word on a line...

Source/WebCore: <rdar://problem/10561285> REGRESSION (r80438): First word on a line or after collapsed space may not be hyphenated even though it should
https://bugs.webkit.org/show_bug.cgi?id=74239

Reviewed by Anders Carlsson.

Tests: fast/text/hyphenate-first-word-after-skipped-space-expected.html
       fast/text/hyphenate-first-word-after-skipped-space.html

* rendering/RenderBlockLineLayout.cpp:
(WebCore::tryHyphenating): Replaced the assumption that the character at lastSpace is a space
iff lastSpace is non-zero with a test of whether it is a space, in the sense that it should
not be counted as part of the prefix when comparing it to the value of hyphenate-limit-before.

LayoutTests: Test and updated results for <rdar://problem/10561285> REGRESSION (r80438): First word on a line or after collapsed space may not be hyphenated even though it should
https://bugs.webkit.org/show_bug.cgi?id=74239

Reviewed by Anders Carlsson.

* fast/text/hyphenate-first-word-after-skipped-space-expected.html: Added.
* fast/text/hyphenate-first-word-after-skipped-space.html: Added.
* platform/mac/fast/text/hyphenate-limit-lines-expected.txt:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@102538 268f45cc-cd09-0410-ab3c-d52691b4dbfc