fixing Java test and sample after moving drawContours() from Imgproc to Core

modules/java/android_test/src/org/opencv/test/imgproc/ImgprocTest.java

@@ -678,7 +678,7 @@ public class ImgprocTest extends OpenCVTestCase {
         List<MatOfPoint> contours = new ArrayList<MatOfPoint>();
         Imgproc.findContours(gray0, contours, new Mat(), Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE);
 
-        Imgproc.drawContours(gray0, contours, -1, new Scalar(0));
+        Core.drawContours(gray0, contours, -1, new Scalar(0));
 
         assertEquals(0, Core.countNonZero(gray0));
     }
@@ -688,7 +688,7 @@ public class ImgprocTest extends OpenCVTestCase {
         List<MatOfPoint> contours = new ArrayList<MatOfPoint>();
         Imgproc.findContours(gray0, contours, new Mat(), Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE);
 
-        Imgproc.drawContours(gray0, contours, -1, new Scalar(0), Core.FILLED);
+        Core.drawContours(gray0, contours, -1, new Scalar(0), Core.FILLED);
 
         assertEquals(0, Core.countNonZero(gray0));
     }

samples/android/color-blob-detection/src/org/opencv/samples/colorblobdetect/ColorBlobDetectionView.java

@@ -203,7 +203,7 @@ public class ColorBlobDetectionView extends SampleCvViewBase implements OnTouchL
             	filteredContours.add(new MatOfPoint(contour));
             }
             
-            Imgproc.drawContours(mRgba, filteredContours, -1, new Scalar(255,0,0,255));
+            Core.drawContours(mRgba, filteredContours, -1, new Scalar(255,0,0,255));
             
             Mat testColorMat = mRgba.submat(2, 34, 2, 34);
             testColorMat.setTo(mSelectedColorRgba);