Get correct text metrics for distance fields, and fix dropouts due to thin features.

src/gpu/GrDistanceFieldTextContext.cpp

Index: src/gpu/GrDistanceFieldTextContext.cpp
diff --git a/src/gpu/GrDistanceFieldTextContext.cpp b/src/gpu/GrDistanceFieldTextContext.cpp
index 03d09a03313748ac8bd0b039b536c71be3a69d76..c4e715fd76a01048cc74cb467b300568010b2c87 100755
--- a/src/gpu/GrDistanceFieldTextContext.cpp
+++ b/src/gpu/GrDistanceFieldTextContext.cpp
@@ -308,7 +308,8 @@ inline void GrDistanceFieldTextContext::init(const GrPaint& paint, const SkPaint
     fSkPaint.setTextSize(SkIntToScalar(kBaseDFFontSize));
     fSkPaint.setLCDRenderText(false);
     fSkPaint.setAutohinted(false);
-    fSkPaint.setSubpixelText(false);
+    fSkPaint.setSubpixelText(true);
+    fSkPaint.setLinearText(true);

[reed1, 2014/03/14 18:32:50]

This field is of questionable meaning :) Did you need to turn this on after
testing, or just speculative? I would have guessed that only subpixel was
needed.

[jvanverth1, 2014/03/14 18:46:02]

Purely speculative. It's gone.

 }
 
 inline void GrDistanceFieldTextContext::finish() {