Fix GetFontData calling itself repeatedly until the process crashes.

Fix GetFontData calling itself repeatedly until the process crashes.

It looks like the GetFontData patch for PDFium is only used on XP/Vista now. Previously PDFium was in a separate binary so we were just calling the real GetFontData from chrome_child.dll. That doesn't work anymore, so use the original function pointer.

BUG=455399
Committed: https://crrev.com/97823ee2d8054183f2b011313a06c28f1945ca23
Cr-Commit-Position: refs/heads/master@{#314706}

[jam, 2015-02-05 00:44:41]

jam@chromium.org changed reviewers:
+ cpu@chromium.org

[cpu_(ooo_6.6-7.5), 2015-02-05 00:46:27]

lgtm

[jam, 2015-02-05 00:49:39]

The CQ bit was checked by jam@chromium.org

[commit-bot: I haz the power, 2015-02-05 00:50:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/903583002/1

[commit-bot: I haz the power, 2015-02-05 01:30:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-05 01:31:58]

Patchset 1 (id:??) landed as
https://crrev.com/97823ee2d8054183f2b011313a06c28f1945ca23
Cr-Commit-Position: refs/heads/master@{#314706}