Execute back key on key up.

Change-Id: Ic878e145f68f3a2b4e8167d4df0685c9d63462f2
diff --git a/src/com/android/contacts/SocialStreamActivity.java b/src/com/android/contacts/SocialStreamActivity.java
index 3110e92..2d84df2 100644
--- a/src/com/android/contacts/SocialStreamActivity.java
+++ b/src/com/android/contacts/SocialStreamActivity.java
@@ -153,16 +153,14 @@
         mFastTrack.show(aggUri, mRect, Intents.MODE_MEDIUM, null);
     }
 
-    /** {@inheritDoc} */
     @Override
-    public boolean onKeyDown(int keyCode, KeyEvent event) {
-        // Back key dismisses fast-track when its visible
-        if (keyCode == KeyEvent.KEYCODE_BACK && mFastTrack.isShowing()) {
+    public void onBackPressed() {
+        if (mFastTrack.isShowing()) {
+            // Back key dismisses fast-track when its visible
             mFastTrack.dismiss();
-            return true;
+        } else {
+            super.onBackPressed();
         }
-
-        return super.onKeyDown(keyCode, event);
     }
 
     @Override