Adds a CloneAndAnimate function to WindowManagerInternalClient

mojo/services/view_manager/server_view_delegate.h

Index: mojo/services/view_manager/server_view_delegate.h
diff --git a/mojo/services/view_manager/server_view_delegate.h b/mojo/services/view_manager/server_view_delegate.h
index 2fbe0c0e3fa8e445e0090fc8dca2188a63c82e8c..14dfe7ac041b520cf430d816ec7ff6fab38fd3fd 100644
--- a/mojo/services/view_manager/server_view_delegate.h
+++ b/mojo/services/view_manager/server_view_delegate.h
@@ -16,13 +16,17 @@ class ServerView;
 
 class ServerViewDelegate {
  public:
+  // Invoked when a view is about to be destroyed; before any of the children
+  // have been removed and before the view has been removed from its parent.
+  virtual void OnWillDestroyView(ServerView* view) = 0;
+
   // Invoked at the end of the View's destructor (after it has been removed from
   // the hierarchy).
   virtual void OnViewDestroyed(const ServerView* view) = 0;
 
-  virtual void OnWillChangeViewHierarchy(const ServerView* view,
-                                         const ServerView* new_parent,
-                                         const ServerView* old_parent) = 0;
+  virtual void OnWillChangeViewHierarchy(ServerView* view,
+                                         ServerView* new_parent,
+                                         ServerView* old_parent) = 0;
 
   virtual void OnViewHierarchyChanged(const ServerView* view,
                                       const ServerView* new_parent,
@@ -38,13 +42,15 @@ class ServerViewDelegate {
                                const ServerView* relative,
                                OrderDirection direction) = 0;
 
-  virtual void OnWillChangeViewVisibility(const ServerView* view) = 0;
+  virtual void OnWillChangeViewVisibility(ServerView* view) = 0;
 
   virtual void OnViewSharedPropertyChanged(
       const ServerView* view,
       const std::string& name,
       const std::vector<uint8_t>* new_data) = 0;
 
+  virtual void OnScheduleViewPaint(const ServerView* view) = 0;
+
  protected:
   virtual ~ServerViewDelegate() {}
 };