Add Android's context menu handler used on the NTP.

chrome/browser/ui/webui/ntp/android/on_context_menu_item_selected_callback.cc

Index: chrome/browser/ui/webui/ntp/android/on_context_menu_item_selected_callback.cc
diff --git a/chrome/browser/ui/webui/ntp/android/on_context_menu_item_selected_callback.cc b/chrome/browser/ui/webui/ntp/android/on_context_menu_item_selected_callback.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7f4585dbe610a0a3d0352b0e4f518e11b614044e
--- /dev/null
+++ b/chrome/browser/ui/webui/ntp/android/on_context_menu_item_selected_callback.cc
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/webui/ntp/android/on_context_menu_item_selected_callback.h"
+
+#include "chrome/browser/ui/webui/ntp/android/context_menu_handler.h"
+
+OnContextMenuItemSelectedCallBack::OnContextMenuItemSelectedCallBack(
+    ContextMenuHandler* context_menu_handler)
+    : context_menu_handler_(context_menu_handler) {
+  context_menu_handler_->SetOnItemSelectedCallback(this);
+}
+
+OnContextMenuItemSelectedCallBack::~OnContextMenuItemSelectedCallBack() {
+}
+
+void OnContextMenuItemSelectedCallBack::ItemSelected(int item_id) {
+  if (context_menu_handler_)
+    context_menu_handler_->OnItemSelected(item_id);
+}
+
+void OnContextMenuItemSelectedCallBack::ClearContextMenuHandler() {
+  context_menu_handler_ = NULL;
+}