Fix bug 145175: [Win] Frameless app windows are not resizable if no draggable region is specified

chrome/browser/ui/extensions/shell_window.cc

Index: chrome/browser/ui/extensions/shell_window.cc
diff --git a/chrome/browser/ui/extensions/shell_window.cc b/chrome/browser/ui/extensions/shell_window.cc
index d2c3a68c065cb22977e9016e31a57af9983877ed..dd5f7330925ba81162f93bc6de33c3a2cfefb057 100644
--- a/chrome/browser/ui/extensions/shell_window.cc
+++ b/chrome/browser/ui/extensions/shell_window.cc
@@ -420,6 +420,10 @@ void ShellWindow::Observe(int type,
           host_details(details);
       if (host_details->first)
         SuspendRenderViewHost(host_details->second);
+      // TODO(jianli): once http://crbug.com/123007 is fixed, we'll no longer
+      // need to make the native window (ShellWindowViews specially) update
+      // the clickthrough region for the new RVH.
+      native_window_->RenderViewHostChanged();
       break;
     }
     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {