Gradient overlay for constrained window

chrome/renderer/chrome_render_view_observer.h

Index: chrome/renderer/chrome_render_view_observer.h
diff --git a/chrome/renderer/chrome_render_view_observer.h b/chrome/renderer/chrome_render_view_observer.h
index 483d22394945181633074d8cad14397285c92ba2..46c158626aa05806b0b6e9e4c1c00678f32bdd97 100644
--- a/chrome/renderer/chrome_render_view_observer.h
+++ b/chrome/renderer/chrome_render_view_observer.h
@@ -24,6 +24,7 @@ class SkBitmap;
 class TranslateHelper;
 struct ThumbnailScore;
 class WebViewColorOverlay;
+class WebViewAnimatingOverlay;
 
 namespace extensions {
 class Dispatcher;
@@ -233,6 +234,9 @@ class ChromeRenderViewObserver : public content::RenderViewObserver,
   // A color page overlay when visually de-emaphasized.
   scoped_ptr<WebViewColorOverlay> dimmed_color_overlay_;
 
+  // A animating page overlay when visually de-emaphasized.
+  scoped_ptr<WebViewAnimatingOverlay> dimmed_animating_overlay_;
+
   // Used to delay calling CapturePageInfo.
   base::Timer capture_timer_;