Replacing sans serif system font with Roboto

Change-Id: Ibe0aa11e2259898e65dc422c7794ab4065a0a90e
diff --git a/graphics/java/android/renderscript/Font.java b/graphics/java/android/renderscript/Font.java
index 616990a..18dacac 100644
--- a/graphics/java/android/renderscript/Font.java
+++ b/graphics/java/android/renderscript/Font.java
@@ -89,10 +89,10 @@
 
         FontFamily sansFamily = new FontFamily();
         sansFamily.mNames = sSansNames;
-        sansFamily.mNormalFileName = "DroidSans.ttf";
-        sansFamily.mBoldFileName = "DroidSans-Bold.ttf";
-        sansFamily.mItalicFileName = "DroidSans.ttf";
-        sansFamily.mBoldItalicFileName = "DroidSans-Bold.ttf";
+        sansFamily.mNormalFileName = "Roboto-Regular.ttf";
+        sansFamily.mBoldFileName = "Roboto-Bold.ttf";
+        sansFamily.mItalicFileName = "Roboto-Italic.ttf";
+        sansFamily.mBoldItalicFileName = "Roboto-BoldItalic.ttf";
         addFamilyToMap(sansFamily);
 
         FontFamily serifFamily = new FontFamily();