Only SkFontMgr_New_DirectWrite should call GetSystemFontCollection.

Aside from the factory helper, there should be no calls to
IDWriteFactory::GetSystemFontCollection. All other code should work in
terms of IDWriteFontCollection for flexibility and correctness.

R=caryclark@google.com

Review URL: https://codereview.chromium.org/77023006

git-svn-id: http://skia.googlecode.com/svn/trunk@12331 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed