Reenable the Skia GlyphPage implementation on Windows
Reenable the Skia GlyphPage implementation on Windows

We switched to use the skia implementation of GlyphPageTreeNode in
r158845 but reverted it in r159931 as it caused a performance
regression.

The underlying cause has now been identified and fixed by using the
SkTypeface charsToGlyphs implementation instyead of the SkPaint one.

This change reenables the Skia GlyphPage implementation on Windows.

BUG=304868
R=pdr@chromium.org

Review URL: https://codereview.chromium.org/45153002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@160626 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs