implementation of android.graphics.BitmapFactory (#460)

Only what was needed is implemented, compression method is still untested.

AndroidCompat/src/main/java/android/graphics/BitmapFactory.java

@@ -0,0 +1,36 @@
+package android.graphics;
+
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.io.IOException;
+import javax.imageio.ImageIO;
+
+public class BitmapFactory {
+    public static Bitmap decodeStream(InputStream is) {
+        Bitmap bm = null;
+
+        try {
+            BufferedImage bf = ImageIO.read(is);
+            bm = new Bitmap(bf);
+        } catch (IOException ex) {
+            throw new RuntimeException(ex);
+        }
+
+        return bm;
+    }
+
+    public static Bitmap decodeByteArray(byte[] data, int offset, int length) {
+        Bitmap bm = null;
+
+        ByteArrayInputStream bais = new ByteArrayInputStream(data);
+        try {
+            BufferedImage bf = ImageIO.read(bais);
+            bm = new Bitmap(bf);
+        } catch (IOException ex) {
+            throw new RuntimeException(ex);
+        }
+
+        return bm;
+    }
+}