Cleans up gyp file for views example and removes duplicate code

ui/views/examples/tabbed_pane_example.h

Index: ui/views/examples/tabbed_pane_example.h
diff --git a/ui/views/examples/tabbed_pane_example.h b/ui/views/examples/tabbed_pane_example.h
index 9a1982692945333ecbdcd7cdad7428f6d99e7167..2d1b25b2e172e4cb8375fa1e6f9bfbe1f91589f1 100644
--- a/ui/views/examples/tabbed_pane_example.h
+++ b/ui/views/examples/tabbed_pane_example.h
@@ -19,9 +19,9 @@ class TabbedPane;
 namespace examples {
 
 // A TabbedPane example tests adding and selecting tabs.
-class TabbedPaneExample : public ExampleBase,
-                          public ButtonListener,
-                          public TabbedPaneListener {
+class VIEWS_EXAMPLES_EXPORT TabbedPaneExample : public ExampleBase,
+                                                public ButtonListener,
+                                                public TabbedPaneListener {
  public:
   TabbedPaneExample();
   virtual ~TabbedPaneExample();