Revert of Support pixel antialising in DirectWrite.

src/ports/SkTypeface_win_dw.cpp

Index: src/ports/SkTypeface_win_dw.cpp
diff --git a/src/ports/SkTypeface_win_dw.cpp b/src/ports/SkTypeface_win_dw.cpp
index 78e3cac558fe40e7c58bd57781733eb26e4879e7..a12438c88f14cf6f28d50fd02e1c828dfcb948c4 100644
--- a/src/ports/SkTypeface_win_dw.cpp
+++ b/src/ports/SkTypeface_win_dw.cpp
@@ -252,7 +252,6 @@
 void DWriteFontTypeface::onFilterRec(SkScalerContext::Rec* rec) const {
     if (rec->fFlags & SkScalerContext::kLCD_Vertical_Flag) {
         rec->fMaskFormat = SkMask::kA8_Format;
-        rec->fFlags |= SkScalerContext::kGenA8FromLCD_Flag;
     }
 
     unsigned flagsWeDontSupport = SkScalerContext::kVertical_Flag |
@@ -263,10 +262,8 @@
     rec->fFlags &= ~flagsWeDontSupport;
 
     SkPaint::Hinting h = rec->getHinting();
-    // DirectWrite2 allows for hinting to be turned off. Force everything else to normal.
-    if (h != SkPaint::kNo_Hinting || !fFactory2 || !fDWriteFontFace2) {
-        h = SkPaint::kNormal_Hinting;
-    }
+    // DirectWrite does not provide for hinting hints.
+    h = SkPaint::kSlight_Hinting;
     rec->setHinting(h);
 
 #if defined(SK_FONT_HOST_USE_SYSTEM_SETTINGS)