add portable and canonical font support for DM

gm/linepaths.cpp

Index: gm/linepaths.cpp
diff --git a/gm/linepaths.cpp b/gm/linepaths.cpp
index ea4fdc887faef5f912f95bdd79b4c7b3741f55f9..53a93278781072756dee24ef44bd4cc21c3a7649 100644
--- a/gm/linepaths.cpp
+++ b/gm/linepaths.cpp
@@ -85,6 +85,7 @@ protected:
         SkPaint titlePaint;
         titlePaint.setColor(SK_ColorBLACK);
         titlePaint.setAntiAlias(true);
+        sk_tool_utils::set_portable_typeface(&titlePaint);
         titlePaint.setLCDRenderText(true);
         titlePaint.setTextSize(15 * SK_Scalar1);
         const char title[] = "Line Drawn Into Rectangle Clips With "
@@ -129,6 +130,7 @@ protected:
                     SkPaint labelPaint;
                     labelPaint.setColor(color);
                     labelPaint.setAntiAlias(true);
+                    sk_tool_utils::set_portable_typeface(&labelPaint);
                     labelPaint.setLCDRenderText(true);
                     labelPaint.setTextSize(10 * SK_Scalar1);
                     canvas->drawText(gStyles[style].fName,
@@ -227,6 +229,7 @@ protected:
         SkPaint titlePaint;
         titlePaint.setColor(SK_ColorBLACK);
         titlePaint.setAntiAlias(true);
+        sk_tool_utils::set_portable_typeface(&titlePaint);
         titlePaint.setLCDRenderText(true);
         titlePaint.setTextSize(15 * SK_Scalar1);
         const char title[] = "Line Closed Drawn Into Rectangle Clips With "
@@ -271,6 +274,7 @@ protected:
                     SkPaint labelPaint;
                     labelPaint.setColor(color);
                     labelPaint.setAntiAlias(true);
+                    sk_tool_utils::set_portable_typeface(&labelPaint);
                     labelPaint.setLCDRenderText(true);
                     labelPaint.setTextSize(10 * SK_Scalar1);
                     canvas->drawText(gStyles[style].fName,