views/examples: Add ProgressBar example.

views/examples/examples_main.cc

Index: views/examples/examples_main.cc
diff --git a/views/examples/examples_main.cc b/views/examples/examples_main.cc
index 17869d21c548e76bd0b24f28a8aeaffc3ce0efb0..d6b4ba6e3b7f3cf9db2d8f0c504f8d98121644ab 100644
--- a/views/examples/examples_main.cc
+++ b/views/examples/examples_main.cc
@@ -25,6 +25,7 @@
 #include "views/examples/native_theme_button_example.h"
 #include "views/examples/native_theme_checkbox_example.h"
 #include "views/examples/native_widget_views_example.h"
+#include "views/examples/progress_bar_example.h"
 #include "views/examples/radio_button_example.h"
 #include "views/examples/scroll_view_example.h"
 #include "views/examples/single_split_view_example.h"
@@ -93,6 +94,7 @@ void ExamplesMain::Init() {
   examples_.push_back(new NativeThemeButtonExample(this));
   examples_.push_back(new NativeThemeCheckboxExample(this));
   examples_.push_back(new NativeWidgetViewsExample(this));
+  examples_.push_back(new ProgressBarExample(this));
   examples_.push_back(new RadioButtonExample(this));
   examples_.push_back(new ScrollViewExample(this));
   examples_.push_back(new SingleSplitViewExample(this));