https://bugs.webkit.org/show_bug.cgi?id=114045

Reviewed by Tim Horton.

Source/WebCore:

We were calculating elapsed time incorrectly.

Test: platform/mac/fast/speechsynthesis/speech-synthesis-elapsed-time.html

* Modules/speech/SpeechSynthesis.cpp:
(WebCore::SpeechSynthesis::fireEvent):

LayoutTests:

* platform/mac/fast/speechsynthesis/speech-synthesis-elapsed-time-expected.txt: Added.
* platform/mac/fast/speechsynthesis/speech-synthesis-elapsed-time.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147801 268f45cc-cd09-0410-ab3c-d52691b4dbfc