Update Android port

* java/org/gnu/emacs/EmacsView.java (cancelPopupMenu): Dismiss
context menu correctly.
(isOpaque): New function.
* java/org/gnu/emacs/EmacsWindowAttachmentManager.java: Make
consumer list public.

java/org/gnu/emacs/EmacsView.java

@@ -514,6 +514,17 @@ else if (child.getVisibility () != GONE)
 
     contextMenu = null;
     popupActive = false;
+
+    /* It is not possible to know with 100% certainty which activity
+       is currently displaying the context menu.  Loop through each
+       activity and call `closeContextMenu' instead.  */
+
+    for (EmacsWindowAttachmentManager.WindowConsumer consumer
+	   : EmacsWindowAttachmentManager.MANAGER.consumers)
+      {
+	if (consumer instanceof EmacsActivity)
+	  ((EmacsActivity) consumer).closeContextMenu ();
+      }
   }
 
   @Override
@@ -646,6 +657,16 @@ else if (child.getVisibility () != GONE)
     return isCurrentlyTextEditor;
   }
 
+  @Override
+  public boolean
+  isOpaque ()
+  {
+    /* Returning true here allows the system to not draw the contents
+       of windows underneath this view, thereby improving
+       performance.  */
+    return true;
+  }
+
   public synchronized void
   setICMode (int icMode)
   {

java/org/gnu/emacs/EmacsWindowAttachmentManager.java

@@ -67,7 +67,7 @@ public interface WindowConsumer
     public void destroy ();
   };
 
-  private List<WindowConsumer> consumers;
+  public List<WindowConsumer> consumers;
   public List<EmacsWindow> windows;
 
   public