Mac: Make calling WebContents::WasShown/WasHidden the responsibility of the content layer

content/browser/web_contents/web_contents_view_aura.h

Index: content/browser/web_contents/web_contents_view_aura.h
diff --git a/content/browser/web_contents/web_contents_view_aura.h b/content/browser/web_contents/web_contents_view_aura.h
index b5f2cdc48a79b57b4416ac412eab4d67085bed3d..2c4b41d6cc4e2a8b53692a9bae1b6f7b89090485 100644
--- a/content/browser/web_contents/web_contents_view_aura.h
+++ b/content/browser/web_contents/web_contents_view_aura.h
@@ -160,9 +160,6 @@ class CONTENT_EXPORT WebContentsViewAura
   // Overridden from aura::WindowObserver:
   void OnWindowVisibilityChanged(aura::Window* window, bool visible) override;
 
-  // Update the web contents visiblity.
-  void UpdateWebContentsVisibility(bool visible);
-
   FRIEND_TEST_ALL_PREFIXES(WebContentsViewAuraTest, EnableDisableOverscroll);
 
   scoped_ptr<aura::Window> window_;
@@ -199,10 +196,6 @@ class CONTENT_EXPORT WebContentsViewAura
 
   scoped_ptr<GestureNavSimple> gesture_nav_simple_;
 
-  // On Windows we can run into problems if resources get released within the
-  // initialization phase while the content (and its dimensions) are not known.
-  bool is_or_was_visible_;
-
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewAura);
 };