add the menu button to support trimming

This is only visible for video item.

Change-Id: I17f8e902f3560cc8524f890705c020901331df74
diff --git a/src/com/android/gallery3d/ui/MenuExecutor.java b/src/com/android/gallery3d/ui/MenuExecutor.java
index 7bccda8..6910562 100644
--- a/src/com/android/gallery3d/ui/MenuExecutor.java
+++ b/src/com/android/gallery3d/ui/MenuExecutor.java
@@ -160,6 +160,7 @@
         boolean supportDelete = (supported & MediaObject.SUPPORT_DELETE) != 0;
         boolean supportRotate = (supported & MediaObject.SUPPORT_ROTATE) != 0;
         boolean supportCrop = (supported & MediaObject.SUPPORT_CROP) != 0;
+        boolean supportTrim = (supported & MediaObject.SUPPORT_TRIM) != 0;
         boolean supportShare = (supported & MediaObject.SUPPORT_SHARE) != 0;
         boolean supportSetAs = (supported & MediaObject.SUPPORT_SETAS) != 0;
         boolean supportShowOnMap = (supported & MediaObject.SUPPORT_SHOW_ON_MAP) != 0;
@@ -172,6 +173,7 @@
         setMenuItemVisible(menu, R.id.action_rotate_ccw, supportRotate);
         setMenuItemVisible(menu, R.id.action_rotate_cw, supportRotate);
         setMenuItemVisible(menu, R.id.action_crop, supportCrop);
+        setMenuItemVisible(menu, R.id.action_trim, supportTrim);
         setMenuItemVisible(menu, R.id.action_share, supportShare);
         setMenuItemVisible(menu, R.id.action_setas, supportSetAs);
         setMenuItemVisible(menu, R.id.action_show_on_map, supportShowOnMap);