Hide the Legacy HWND when the RWHVA is destroyed.

BUG=437701

Review URL: https://codereview.chromium.org/784553002

Cr-Commit-Position: refs/heads/master@{#307167}

content/browser/web_contents/web_contents_view_aura.cc

@@ -745,7 +745,8 @@ class WebContentsViewAura::WindowObserver
 WebContentsViewAura::WebContentsViewAura(
     WebContentsImpl* web_contents,
     WebContentsViewDelegate* delegate)
-    : web_contents_(web_contents),
+    : WebContentsObserver(web_contents),
+      web_contents_(web_contents),
       delegate_(delegate),
       current_drag_op_(blink::WebDragOperationNone),
       drag_dest_delegate_(NULL),
@@ -1657,6 +1658,12 @@ int WebContentsViewAura::OnPerformDrop(const ui::DropTargetEvent& event) {
   return ConvertFromWeb(current_drag_op_);
 }
 
+void WebContentsViewAura::RenderProcessGone(base::TerminationStatus status) {
+#if defined(OS_WIN)
+  UpdateLegacyHwndVisibility();
+#endif
+}
+
 void WebContentsViewAura::OnWindowVisibilityChanged(aura::Window* window,
                                                     bool visible) {
   // Ignore any visibility changes in the hierarchy below.
@@ -1689,9 +1696,18 @@ void WebContentsViewAura::UpdateWebContentsVisibility(bool visible) {
   }
 
 #if defined(OS_WIN)
+  UpdateLegacyHwndVisibility();
+#endif
+}
+
+#if defined(OS_WIN)
+void WebContentsViewAura::UpdateLegacyHwndVisibility() {
   if (!legacy_hwnd_)
     return;
 
+  bool visible = (window_->IsVisible() &&
+                  web_contents_->GetRenderWidgetHostView());
+
   if (visible && GetNativeView() && GetNativeView()->GetHost()) {
     legacy_hwnd_->UpdateParent(
         GetNativeView()->GetHost()->GetAcceleratedWidget());
@@ -1703,10 +1719,8 @@ void WebContentsViewAura::UpdateWebContentsVisibility(bool visible) {
     legacy_hwnd_->UpdateParent(ui::GetHiddenWindow());
     legacy_hwnd_->Hide();
   }
-#endif
 }
 
-#if defined(OS_WIN)
 gfx::NativeViewAccessible
 WebContentsViewAura::GetNativeViewAccessible() {
   BrowserAccessibilityManager* manager =

content/browser/web_contents/web_contents_view_aura.h

@@ -13,6 +13,7 @@
 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
 #include "content/browser/web_contents/web_contents_view.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/web_contents_observer.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_observer.h"
 #include "ui/compositor/layer_animation_observer.h"
@@ -56,7 +57,8 @@ class WebContentsViewAura
       public ui::ImplicitAnimationObserver,
       public aura::WindowDelegate,
       public aura::client::DragDropDelegate,
-      public aura::WindowObserver {
+      public aura::WindowObserver,
+      public WebContentsObserver {
  public:
   WebContentsViewAura(WebContentsImpl* web_contents,
                       WebContentsViewDelegate* delegate);
@@ -196,6 +198,9 @@ class WebContentsViewAura
   void OnDragExited() override;
   int OnPerformDrop(const ui::DropTargetEvent& event) override;
 
+  // Overridden from WebContentsObserver:
+  void RenderProcessGone(base::TerminationStatus status) override;
+
   // Overridden from aura::WindowObserver:
   void OnWindowVisibilityChanged(aura::Window* window, bool visible) override;
 
@@ -205,6 +210,8 @@ class WebContentsViewAura
 #if defined(OS_WIN)
   // Overridden from LegacyRenderWidgetHostHWNDDelegate:
   virtual gfx::NativeViewAccessible GetNativeViewAccessible() override;
+
+  void UpdateLegacyHwndVisibility();
 #endif
 
   scoped_ptr<aura::Window> window_;