Show notification icon in place of "1" in badge.

- When notifications update, add the NotificationInfo to the
  BadgeInfo if there is only one for an app. BadgeRenderer
  will use the NotificationInfo to get the icon to draw.
- When retrieving the icon from the NotificationInfo, we draw
  it into a shader (similar to MaskableIconDrawable), which is
  rendered by BadgeRenderer.
- For now, we only use the notification icon if it is large.

Bug: 34839959
Bug: 32410600
Bug: 33553066
Change-Id: I31851804008dd15bab75d2759441187830c3265e

src/com/android/launcher3/DeviceProfile.java

@@ -196,9 +196,7 @@ public class DeviceProfile {
         hotseatBarBottomPaddingPx = 0;
         hotseatLandGutterPx = res.getDimensionPixelSize(R.dimen.dynamic_grid_hotseat_gutter_width);
 
-        int badgeSize = res.getDimensionPixelSize(R.dimen.badge_size);
-        int badgeTextSize = res.getDimensionPixelSize(R.dimen.badge_text_size);
-        mBadgeRenderer = new BadgeRenderer(badgeSize, badgeTextSize);
+        mBadgeRenderer = new BadgeRenderer(context);
 
         // Determine sizes.
         widthPx = width;