Fixes bug in instant that resulted in flickery fade. The problem would

chrome/browser/ui/views/frame/contents_container.h

Index: chrome/browser/ui/views/frame/contents_container.h
diff --git a/chrome/browser/ui/views/frame/contents_container.h b/chrome/browser/ui/views/frame/contents_container.h
index 9b32e2d8d5e9223462c020e2e64a989a1ad41540..0429b9f2980ec3ee6a5cd6d95cc1470197b42f38 100644
--- a/chrome/browser/ui/views/frame/contents_container.h
+++ b/chrome/browser/ui/views/frame/contents_container.h
@@ -45,6 +45,9 @@ class ContentsContainer : public views::View, public AnimationDelegate {
   // Fades out the active contents.
   void FadeActiveContents();
 
+  // Shows the fade. This is similiar to |FadeActiveContents|, but is immediate.
+  void ShowFade();
+
   // Removes the fade. This is done implicitly when the preview is made active.
   void RemoveFade();
 
@@ -55,6 +58,14 @@ class ContentsContainer : public views::View, public AnimationDelegate {
   virtual void AnimationProgressed(const Animation* animation);
 
  private:
+  class OverlayContentView;
+
+  // Creates the overlay widget. The opacity is set at |initial_opacity|.
+  void CreateOverlay(int initial_opacity);
+
+  // Invoked when the contents view of the overlay is destroyed.
+  void OverlayViewDestroyed();
+
   views::View* active_;
 
   views::View* preview_;
@@ -65,6 +76,9 @@ class ContentsContainer : public views::View, public AnimationDelegate {
   // make the active view appear faded out.
   views::Widget* active_overlay_;
 
+  // Content view of active_overlay. Used to track when the widget is destroyed.
+  OverlayContentView* overlay_view_;
+
   // Animation used to vary the opacity of active_overlay.
   scoped_ptr<SlideAnimation> overlay_animation_;