Revert of Get all font unittests running with DirectWrite on Windows 7+

Revert of Get all font unittests running with DirectWrite on Windows 7+ (patchset #11 id:220001 of https://codereview.chromium.org/844083002/)

Reason for revert:
breaks PlatformFontWinTest.DeriveFontWithHeight on xp and vista

Original issue's description:
> Get all font unittests running with DirectWrite on Windows 7+
>
> Fixes as per below:-
> 1. Remove the addition of the fLeading value when calculating the height for the font
>    with DirectWrite. fAscent + fDescent is the height of the font and adding the fLeading
>    value to it returns the spacing between lines which is not what we are looking for.
>
> 2. The FontListTest.Fonts_GetHeight_GetBaseline unittest has a condition which basically validates
>    whether the difference between the font height and the baseline is different for Arial and Symbol
>    fonts. This fails for DirectWrite and fails for GDI with font sizes like 50, etc. Replaced this check
>    with a check for the font heights are different.
>
> 3. Reworked the PlatformFontWinTest.DeriveFontWithHeight test to ensure it passes for DirectWrite and GDI.
>
> BUG=442010
> R=msw
>
> Committed: https://crrev.com/58063de6b256e760e838af217bbc992b64f1cb59
> Cr-Commit-Position: refs/heads/master@{#311178}

TBR=msw@chromium.org,asvitkine@chromium.org,ananta@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=442010
Committed: https://crrev.com/e34da193dd4c80adf30c63cdb5ed634876240291
Cr-Commit-Position: refs/heads/master@{#311242}

[jochen (gone - plz use gerrit), 2015-01-13 09:18:02]

Created Revert of Get all font unittests running with DirectWrite on Windows 7+

[commit-bot: I haz the power, 2015-01-13 09:18:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/820173005/1

[commit-bot: I haz the power, 2015-01-13 09:20:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-13 09:22:08]

Patchset 1 (id:??) landed as
https://crrev.com/e34da193dd4c80adf30c63cdb5ed634876240291
Cr-Commit-Position: refs/heads/master@{#311242}