Rewrite SkTRegistry to take any trivially-copyable type.

experimental/SkiaExamples/SkExample.cpp

Index: experimental/SkiaExamples/SkExample.cpp
diff --git a/experimental/SkiaExamples/SkExample.cpp b/experimental/SkiaExamples/SkExample.cpp
index d4adaf49249d28daf7db0c526f59218cbd4f9128..91f70f3e5b6112a8a09c7eafa0264597fff1f17f 100644
--- a/experimental/SkiaExamples/SkExample.cpp
+++ b/experimental/SkiaExamples/SkExample.cpp
@@ -39,7 +39,7 @@ void application_term() {
 SkExampleWindow::SkExampleWindow(void* hwnd)
     : INHERITED(hwnd) {
     fRegistry = SkExample::Registry::Head();
-    fCurrExample = fRegistry->factory()(this);
+    fCurrExample = fRegistry->data()(this);
 
     if (FLAGS_match.count()) {
         // Start with the a matching sample if possible.
@@ -166,7 +166,7 @@ bool SkExampleWindow::findNextMatch() {
         if (NULL == fRegistry) {  // Reached the end of the registered samples. GOTO head.
             fRegistry = SkExample::Registry::Head();
         }
-        SkExample* next = fRegistry->factory()(this);
+        SkExample* next = fRegistry->data()(this);
         if (!SkCommandLineFlags::ShouldSkip(FLAGS_match, next->getName().c_str())) {
             fCurrExample = next;
             found = true;