Make the RenderViewHostImpl update its visibility after a swap.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index ed555cc02ee3902056d4e34ae76f00031fe416cf..38f825f38f1e5470c3dfeda232715f1c485371bc 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -690,7 +690,7 @@ RenderWidgetHost* RenderWidgetHostViewAura::GetRenderWidgetHost() const {
 }
 
 void RenderWidgetHostViewAura::WasShown() {
-  if (!host_->is_hidden())
+  if (!host_ || !host_->is_hidden())
     return;
   host_->WasShown();
   if (framebuffer_holder_)
@@ -714,7 +714,7 @@ void RenderWidgetHostViewAura::WasShown() {
 }
 
 void RenderWidgetHostViewAura::WasHidden() {
-  if (host_->is_hidden())
+  if (!host_ || host_->is_hidden())
     return;
   host_->WasHidden();
   if (framebuffer_holder_)
@@ -961,10 +961,12 @@ bool RenderWidgetHostViewAura::IsSurfaceAvailableForCopy() const {
 
 void RenderWidgetHostViewAura::Show() {
   window_->Show();
+  WasShown();

[no sievers, 2013/09/19 19:49:08]

I thought this somehow happened already when I followed the code:
window_->Show() -> SetVisible() -> delegate_->OnWindowTargetVisibilityChanged()
-> WebContentsViewAura::OnWindowTargetVisibilityChanged() ->
web_contents_->WasShown() ->  rwhv->WasShown()

[zturner, 2013/09/19 20:46:45]

The delegate is a RWHVA.  So it goes into
RWHVA::OnWindowTargetVisibilityChanged(), which does nothing.

 }
 
 void RenderWidgetHostViewAura::Hide() {
   window_->Hide();
+  WasHidden();
 }
 
 bool RenderWidgetHostViewAura::IsShowing() {