add more Java APIs needed for OctoDroid

src/api-impl/android/graphics/Typeface.java

@@ -34,6 +34,7 @@ public class Typeface {
 	public static final int BOLD_ITALIC = 3;
 
 	public long skia_typeface = 0;
+	public long native_instance = 0;  // directly accessed by androidx
 
 	public static Typeface createFromAsset(AssetManager mgr, String path) {
 		return DEFAULT;

src/api-impl/android/graphics/drawable/ColorDrawable.java

@@ -22,4 +22,9 @@ public class ColorDrawable extends Drawable {
 	public void draw(Canvas canvas) {
 		canvas.drawRect(getBounds(), paint);
 	}
+
+	public void setColor(int color) {
+		this.color = color;
+		paint.setColor(color);
+	}
 }

src/api-impl/android/graphics/drawable/Drawable.java

@@ -62,6 +62,8 @@ public class Drawable {
 		public abstract Drawable newDrawable(Resources res);
 
 		public abstract Drawable newDrawable();
+
+		public abstract int getChangingConfigurations();
 	}
 
 	public void setBounds(int left, int top, int right, int bottom) {

src/api-impl/android/graphics/drawable/TransitionDrawable.java

@@ -0,0 +1,10 @@
+package android.graphics.drawable;
+
+public class TransitionDrawable extends Drawable {
+
+	public TransitionDrawable(Drawable[] layers) {}
+
+	public void setCrossFadeEnabled(boolean enabled) {}
+
+	public void startTransition(int duration) {}
+}