Added a menu item in Browser called Close other tabs

This closes all other tabs except the current one (only for the phone interface)
Will submit patch for tablet interface once this is approved.
It solves the problem of mass closing unneeded tabs to a certain extent.
Preferred method would be to select multiple tabs like list items.

Change-Id: I5af00f1c19043104987375f1da396eb6fefb5dd4
diff --git a/src/com/android/browser/UiController.java b/src/com/android/browser/UiController.java
index e7a8953..b97ae10 100644
--- a/src/com/android/browser/UiController.java
+++ b/src/com/android/browser/UiController.java
@@ -59,6 +59,8 @@
 
     void closeTab(Tab tab);
 
+    void closeOtherTabs();
+
     void stopLoading();
 
     Intent createBookmarkCurrentPageIntent(boolean canBeAnEdit);