Add basic code required for drawPicture()

Change-Id: Ib9e73cd4b932836d4debe920200f8d1c1861c2d4

Author: Romain Guy

core/java/android/view/GLES20Canvas.java

@@ -908,17 +908,30 @@ public void drawPath(Path path, Paint paint) {
 
     @Override
     public void drawPicture(Picture picture) {
-        // TODO: Implement
+        picture.endRecording();
+        // TODO: Implement rendering
     }
 
     @Override
     public void drawPicture(Picture picture, Rect dst) {
-        // TODO: Implement
+        save();
+        translate(dst.left, dst.top);
+        if (picture.getWidth() > 0 && picture.getHeight() > 0) {
+            scale(dst.width() / picture.getWidth(), dst.height() / picture.getHeight());
+        }
+        drawPicture(picture);
+        restore();
     }
 
     @Override
     public void drawPicture(Picture picture, RectF dst) {
-        // TODO: Implement
+        save();
+        translate(dst.left, dst.top);
+        if (picture.getWidth() > 0 && picture.getHeight() > 0) {
+            scale(dst.width() / picture.getWidth(), dst.height() / picture.getHeight());
+        }
+        drawPicture(picture);
+        restore();
     }
 
     @Override