Always use subpixel ascent and descent

third_party/WebKit/Source/platform/fonts/SimpleFontData.cpp

Index: third_party/WebKit/Source/platform/fonts/SimpleFontData.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/SimpleFontData.cpp b/third_party/WebKit/Source/platform/fonts/SimpleFontData.cpp
index 136998d0b3f5484dc9d93b37b9bdff9796e13c56..990e04c8561fb2f8d43c8b79c9ecd53432067241 100644
--- a/third_party/WebKit/Source/platform/fonts/SimpleFontData.cpp
+++ b/third_party/WebKit/Source/platform/fonts/SimpleFontData.cpp
@@ -134,29 +134,8 @@ void SimpleFontData::platformInit(bool subpixelAscentDescent) {
     ascent = vdmxAscent;
     descent = -vdmxDescent;
   } else {
-    // For tiny fonts, the rounding of fAscent and fDescent results in equal
-    // baseline for different types of text baselines (crbug.com/338908).
-    // Please see CanvasRenderingContext2D::getFontBaseline for the heuristic.
-    if (subpixelAscentDescent &&
-        (-metrics.fAscent < 3 || -metrics.fAscent + metrics.fDescent < 2)) {
-      ascent = -metrics.fAscent;
-      descent = metrics.fDescent;
-    } else {
-      ascent = SkScalarRoundToScalar(-metrics.fAscent);
-      descent = SkScalarRoundToScalar(metrics.fDescent);
-    }
-#if OS(LINUX) || OS(ANDROID)
-    // When subpixel positioning is enabled, if the descent is rounded down, the
-    // descent part of the glyph may be truncated when displayed in a 'overflow:
-    // hidden' container.  To avoid that, borrow 1 unit from the ascent when
-    // possible.
-    // FIXME: This can be removed if sub-pixel ascent/descent is supported.
-    if (platformData().getFontRenderStyle().useSubpixelPositioning &&
-        descent < SkScalarToFloat(metrics.fDescent) && ascent >= 1) {
-      ++descent;
-      --ascent;
-    }
-#endif
+    ascent = -metrics.fAscent;
+    descent = metrics.fDescent;
   }
 
 #if OS(MACOSX)