Enable DispatchCloseToNextBrowser

Author: ficristo

appshell/appshell_process_message.h

@@ -402,7 +402,7 @@ namespace appshell {
 
             // The DispatchCloseToNextBrowser() call initiates a quit sequence. The app will
             // quit if all browser windows are closed.
-//             handler->DispatchCloseToNextBrowser();
+            handler->DispatchCloseToNextBrowser();
 
         } else if (message_name == "AbortQuit") {
             // Parameters - none

appshell/browser/client_handler.cc

@@ -833,4 +833,9 @@ bool ClientHandler::ExecuteTestMenu(int command_id) {
   return false;
 }
 
+void ClientHandler::DispatchCloseToNextBrowser()
+{
+  MainContext::Get()->GetRootWindowManager()->CloseAllWindows(false);
+}
+
 }  // namespace client

appshell/browser/client_handler.h

@@ -266,6 +266,8 @@ class ClientHandler : public CefClient,
   // Returns true if this handler uses off-screen rendering.
   bool is_osr() const { return is_osr_; }
 
+  void DispatchCloseToNextBrowser();
+
  private:
   // Create a new popup window using the specified information. |is_devtools|
   // will be true if the window will be used for DevTools. Return true to