Implement button to get application info for an app shortcut.

For now, it's just a drag target like the delete zone. Once all apps
and the home screen support a selection mode, this (and delete) will
be implemented as buttons in the Contextual Action Bar.

Change-Id: I6bf43d03eefda672ea34c583a7021137da22b184
diff --git a/res/layout-xlarge/launcher.xml b/res/layout-xlarge/launcher.xml
index 8133853..4785b0c 100644
--- a/res/layout-xlarge/launcher.xml
+++ b/res/layout-xlarge/launcher.xml
@@ -63,34 +63,52 @@
         android:layout_gravity="top|right">
 
         <ImageView
-            android:id="@+id/configure_button"
+            android:id="@+id/all_apps_button"
+            android:src="@drawable/all_apps_button"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_alignParentRight="true"
+
+            android:onClick="onClickAllAppsButton"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <ImageView
+            android:id="@+id/configure_button"
             android:src="@drawable/configure_button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_toLeftOf="@id/all_apps_button"
 
             android:onClick="onClickConfigureButton"
             android:focusable="true"
             android:clickable="true" />
+
         <com.android.launcher2.DeleteZone
             android:id="@+id/delete_zone"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_alignLeft="@id/all_apps_button"
+            android:layout_alignTop="@id/all_apps_button"
             android:paddingTop="@dimen/delete_zone_padding"
 
             android:scaleType="center"
             android:src="@drawable/delete_zone_selector"
             android:visibility="gone"
             launcher:direction="horizontal" />
-        <ImageView
-            android:id="@+id/all_apps_button"
+
+        <com.android.launcher2.ApplicationInfoDropTarget
+            android:id="@+id/info_button"
+            android:src="@drawable/info_button"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_toRightOf="@id/configure_button"
-            android:src="@drawable/all_apps_button"
+            android:layout_alignLeft="@id/configure_button"
+            android:layout_centerVertical="true"
+            android:visibility="gone"
 
-            android:onClick="onClickAllAppsButton"
             android:focusable="true"
             android:clickable="true" />
+
     </RelativeLayout>
 
     <TabHost