Bug 850600 - Part 1: Call hide() on TabPanel after tab tray is hidden. r=mfinkle

mobile/android/base/TabsPanel.java

@@ -436,6 +436,13 @@ public class TabsPanel extends LinearLayout
 
         mHeader.setLayerType(View.LAYER_TYPE_NONE, null);
         mTabsContainer.setLayerType(View.LAYER_TYPE_NONE, null);
+
+        // If the tray is now hidden, call hide() on current panel and unset it as the current panel
+        // to avoid hide() being called again when the tray is opened next.
+        if (!mVisible && mPanel != null) {
+            mPanel.hide();
+            mPanel = null;
+        }
     }
 
     public void setTabsLayoutChangeListener(TabsLayoutChangeListener listener) {