Cleans up gyp file for views example and removes duplicate code

ui/views/examples/multiline_example.h

Index: ui/views/examples/multiline_example.h
diff --git a/ui/views/examples/multiline_example.h b/ui/views/examples/multiline_example.h
index 56613bdab4d68d246777de5b37c1d93f52284030..351bef5ae339ba4cdd1cb9d909eca2a7bd8c7390 100644
--- a/ui/views/examples/multiline_example.h
+++ b/ui/views/examples/multiline_example.h
@@ -18,9 +18,9 @@ class Label;
 namespace examples {
 
 // An example that compares the multiline rendering of different controls.
-class MultilineExample : public ExampleBase,
-                         public TextfieldController,
-                         public ButtonListener {
+class VIEWS_EXAMPLES_EXPORT MultilineExample : public ExampleBase,
+                                               public TextfieldController,
+                                               public ButtonListener {
  public:
   MultilineExample();
   virtual ~MultilineExample();