Update SharingSupport demo for support lib API change

Change-Id: I351271b9847d7444470ed8c74dd18ff580718aca
diff --git a/samples/Support4Demos/src/com/example/android/supportv4/app/SharingSupport.java b/samples/Support4Demos/src/com/example/android/supportv4/app/SharingSupport.java
index 68eb0f2..ec099a8 100644
--- a/samples/Support4Demos/src/com/example/android/supportv4/app/SharingSupport.java
+++ b/samples/Support4Demos/src/com/example/android/supportv4/app/SharingSupport.java
@@ -65,7 +65,7 @@
         ShareCompat.IntentBuilder.from(this)
                 .setType("text/plain")
                 .setText("I'm sharing!")
-                .startChooserForResult();
+                .startChooser();
     }
 
     public void onShareFileClick(View v) {
@@ -79,7 +79,7 @@
             ShareCompat.IntentBuilder.from(this)
                     .setType("text/plain")
                     .setStream(Uri.parse(SharingSupportProvider.CONTENT_URI + "/foo.txt"))
-                    .startChooserForResult();
+                    .startChooser();
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
@@ -103,7 +103,7 @@
                     .setType("text/plain")
                     .addStream(Uri.parse(SharingSupportProvider.CONTENT_URI + "/foo.txt"))
                     .addStream(Uri.parse(SharingSupportProvider.CONTENT_URI + "/bar.txt"))
-                    .startChooserForResult();
+                    .startChooser();
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {