Bug 1269971 - Part 4. Add text stroke into text mask; r=jfkthame

MozReview-Commit-ID: IkaLMEX5q0T

--HG--
extra : rebase_source : 14ef2f4e033121873cbb51e437c3e7690c963fdb

layout/generic/nsTextFrame.cpp

@@ -6613,7 +6613,9 @@ nsTextFrame::PaintText(const PaintTextParams& aParams,
     foregroundColor = gfxColor.ToABGR();
   }
 
-  nscolor textStrokeColor = textPaintStyle.GetWebkitTextStrokeColor();
+  nscolor textStrokeColor = aParams.generateTextMask
+                            ? NS_RGBA(0, 0, 0, 255)
+                            : textPaintStyle.GetWebkitTextStrokeColor();
   if (aOpacity != 1.0f) {
     gfx::Color gfxColor = gfx::Color::FromABGR(textStrokeColor);
     gfxColor.a *= aOpacity;