Fix Fullscreen Flash for out-of-process iframes.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index e8a3eec1b8e87ce7d09fd93de129d72b7c2159eb..c2728be006f1640b53ebd2026eff4d48ecbca3ee 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1221,10 +1221,10 @@ void RenderFrameImpl::PepperSelectionChanged(
 RenderWidgetFullscreenPepper* RenderFrameImpl::CreatePepperFullscreenContainer(
     PepperPluginInstanceImpl* plugin) {
   GURL active_url;
-  if (render_view_->webview() && render_view_->webview()->mainFrame())
-    active_url = GURL(render_view_->webview()->mainFrame()->document().url());
+  if (render_view_->webview())
+    active_url = render_view()->GetURLForGraphicsContext3D();
   RenderWidgetFullscreenPepper* widget = RenderWidgetFullscreenPepper::Create(
-      GetRenderWidget()->routing_id(), GetRenderWidget()->compositor_deps(),
+      render_view()->routing_id(), GetRenderWidget()->compositor_deps(),
       plugin, active_url, GetRenderWidget()->screenInfo());
   widget->show(blink::WebNavigationPolicyIgnore);
   return widget;