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

Review URL: https://codereview.chromium.org/903583002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#314706}

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