Bug 1195472 - Call Show after Enable on puppet widgets to avoid an assertion when running crash tests. r=aklotz

layout/generic/crashtests/crashtests.list

@@ -367,10 +367,10 @@ asserts-if(winWidget,0-3) load 499885-1.xhtml
 load 501535-1.html
 load 503961-1.xhtml
 load 503961-2.html
-asserts-if(gtkWidget&&browserIsRemote,1) load 505912-1.html # Bug 1195472
 load 508168-1.html
 load 508816-1.xul
 load 508908-1.html
+load 505912-1.html
 load 509749-1.html
 load 511482.html
 load 512724-1.html

layout/generic/nsPluginFrame.cpp

@@ -306,8 +306,8 @@ nsPluginFrame::PrepForDrawing(nsIWidget *aWidget)
     viewMan->InsertChild(view, mInnerView, nullptr, true);
 
     mWidget->SetParent(parentWidget);
-    mWidget->Show(true);
     mWidget->Enable(true);
+    mWidget->Show(true);
 
     // Set the plugin window to have an empty clip region until we know
     // what our true position, size and clip region are. These