Implement the close() API for Message ports

android_webview/renderer/aw_message_port_client.cc

Index: android_webview/renderer/aw_message_port_client.cc
diff --git a/android_webview/renderer/aw_message_port_client.cc b/android_webview/renderer/aw_message_port_client.cc
index 7a5f67e062f1c692698a94e3f15b0bb93fe14168..2a92da2fc0b4ea29b08bceea017fcb3d09a066a5 100644
--- a/android_webview/renderer/aw_message_port_client.cc
+++ b/android_webview/renderer/aw_message_port_client.cc
@@ -70,7 +70,8 @@ void AwMessagePortClient::OnWebToAppMessage(
 void AwMessagePortClient::OnAppToWebMessage(
     int message_port_id,
     const base::string16& message,
-    const vector<int>& sent_message_port_ids) {
+    const vector<int>& sent_message_port_ids,
+    bool close_port) {
   v8::HandleScope handle_scope(blink::mainThreadIsolate());
   blink::WebFrame* main_frame =
       render_frame()->GetRenderView()->GetWebView()->mainFrame();
@@ -92,7 +93,7 @@ void AwMessagePortClient::OnAppToWebMessage(
   base::string16 result = serialized_script_value.toString();
   Send(new AwMessagePortHostMsg_ConvertedAppToWebMessage(
       render_frame()->GetRoutingID(), message_port_id,
-      result, sent_message_port_ids));
+      result, sent_message_port_ids, close_port));
 }
 
 }