Rewrite SkTRegistry to take any trivially-copyable type.

experimental/SkiaExamples/SkExample.h

 /*
  * Copyright 2013 Google Inc.
  *
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  */
 
 #ifndef SkExample_DEFINED
@@ skipping 10 matching lines @@
 
 class SkExample : public SkNoncopyable {
 public:
     SkExample(SkExampleWindow* window) : fWindow(window) {}
 
     // Your class should override this method to do its thing.
     virtual void draw(SkCanvas* canvas) = 0;
 
     SkString getName() { return fName; };
     // Use this public registry to tell the world about your sample.
-    typedef SkTRegistry<SkExample*, SkExampleWindow*> Registry;
+    typedef SkTRegistry<SkExample*(*)(SkExampleWindow*)> Registry;
 
 protected:
     SkExampleWindow* fWindow;
     SkString fName;
 };
 
 class SkExampleWindow : public SkOSWindow {
 public:
     enum DeviceType {
         kRaster_DeviceType,
@@ skipping 29 matching lines @@
     const SkExample::Registry* fRegistry;
     GrContext* fContext;
     GrRenderTarget* fRenderTarget;
     AttachmentInfo fAttachmentInfo;
     const GrGLInterface* fInterface;
 
     typedef SkOSWindow INHERITED;
 };
 
 #endif