Revert of Reland "Share code between FontPlatformDataWin and FontPlatformDataHarfBuzz" (https://codereview.chromium.org/224763004/)

Reason for revert:
It broke 100 tests (just as in the try job): http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win7%20%28dbg%29/builds/4553

Original issue's description:
> Reland "Share code between FontPlatformDataWin and FontPlatformDataHarfBuzz"
> 
> Move linux specific code from FontPlatformDataHarfBuzz.cpp into a new
> FontPlatformDataLinux.cpp file and merge the shared code across the win
> and linux implementations into FontPlatformDataHarfBuzz.cpp.
> 
> With this change code shared across all HarfBuzz platforms is in
> FontPlatformDataHarfBuzz.cpp and platform specific code in the Linux and
> Windows files respectively.
> 
> Once Mac is fully moved over to HarfBuzz FontPlatformDataHarfBuzz will
> be renamed to FontPlatformData and moved to platform/fonts.
> 
> Originally landed as r170801 and reverted as r170805 due to an android
> build failure.
> 
> TBR=dglazkov@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=170834

TBR=dglazkov@chromium.org,eae@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/225663003

git-svn-id: svn://svn.chromium.org/blink/trunk@170866 bbb929c8-8fbe-4397-9dbb-9b2b20218538