Fixes #1921372. Pressing Home with the window shade down would show gestures pad.

This change checks for the window focus before taking action. If the Home's window
does not have focus, then the gestures pad is not shown.

src/com/android/launcher/Launcher.java

@@ -869,7 +869,8 @@ public final class Launcher extends Activity implements View.OnClickListener, On
             if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
                     Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
 
-                if (mGesturesPanel != null && mDragLayer.getWindowVisibility() == View.VISIBLE) {
+                if (mGesturesPanel != null && mDragLayer.getWindowVisibility() == View.VISIBLE &&
+                        mDragLayer.hasWindowFocus()) {
                     SearchManager searchManager =
                             (SearchManager) getSystemService(Context.SEARCH_SERVICE);
                     if (!searchManager.isVisible()) {