Fixed view example. It was failing because some of view classes requires WidgetGTK in

views/examples/radio_button_example.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef VIEWS_EXAMPLES_RADIO_BUTTON_EXAMPLE_H_
 #define VIEWS_EXAMPLES_RADIO_BUTTON_EXAMPLE_H_
 
 #include "base/compiler_specific.h"
 #include "base/string_util.h"
 #include "views/controls/button/radio_button.h"
 #include "views/controls/button/text_button.h"
 #include "views/examples/example_base.h"
 
 namespace examples {
 
-class RadioButtonExample : protected ExampleBase,
-                           private views::ButtonListener {
+class RadioButtonExample : public ExampleBase,
+                           public views::ButtonListener {
  public:
-  explicit RadioButtonExample(ExamplesMain* main) : ExampleBase(main) {
+  explicit RadioButtonExample(ExamplesMain* main): ExampleBase(main) {}
+
+  virtual ~RadioButtonExample() {}
+
+  virtual std::wstring GetExampleTitle() {
+    return L"Radio Button";
+  }
+
+  virtual void CreateExampleView(views::View* container) {
     select_ = new views::TextButton(this, L"Select");
     status_ = new views::TextButton(this, L"Show Status");
 
     int all = arraysize(radio_buttons_);
 
     // divide buttons into 2 groups
     int group_count = all / 2;
     for (int i = 0; i < all; i++) {
       int group = i / group_count;
       radio_buttons_[i] = new views::RadioButton(
           StringPrintf(L"Radio %d in group %d", (i % group_count + 1), group),
           group);
     }
 
-    container_ = new views::View();
-    views::GridLayout* layout = new views::GridLayout(container_);
-    container_->SetLayoutManager(layout);
+    views::GridLayout* layout = new views::GridLayout(container);
+    container->SetLayoutManager(layout);
 
     views::ColumnSet* column_set = layout->AddColumnSet(0);
     column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL,
                           1.0f, views::GridLayout::USE_PREF, 0, 0);
     for (int i = 0; i < all; i++) {
       layout->StartRow(0, 0);
       layout->AddView(radio_buttons_[i]);
     }
     layout->StartRow(0, 0);
     layout->AddView(select_);
     layout->StartRow(0, 0);
     layout->AddView(status_);
   }
 
-  virtual ~RadioButtonExample() {}
-
-  virtual std::wstring GetExampleTitle() {
-    return L"Radio Button";
-  }
-
-  virtual views::View* GetExampleView() {
-    return container_;
-  }
-
  private:
   // Override from ButtonListener
   virtual void ButtonPressed(views::Button* sender, const views::Event& event) {
     if (sender == select_) {
       radio_buttons_[0]->SetChecked(true);
       radio_buttons_[5]->SetChecked(true);
     } else if (sender == status_) {
       // Show the state of radio buttons.
       PrintStatus(L"Group1: 1:%ls, 2:%ls, 3:%ls   Group2: 1:%ls, 2:%ls, 3:%ls",
                   IntToOnOff(radio_buttons_[0]->checked()),
                   IntToOnOff(radio_buttons_[1]->checked()),
                   IntToOnOff(radio_buttons_[2]->checked()),
                   IntToOnOff(radio_buttons_[3]->checked()),
                   IntToOnOff(radio_buttons_[4]->checked()),
                   IntToOnOff(radio_buttons_[5]->checked()));
     }
   }
 
-  // The view containing this test's controls.
-  views::View* container_;
-
   // 6 radio buttons, 0-2 consists 1st group, and 3-5 consists
   // 2nd group.
   views::RadioButton* radio_buttons_[6];
 
   // Control button to select radio buttons, and show the status of buttons.
   views::TextButton* select_, *status_;
 
   DISALLOW_COPY_AND_ASSIGN(RadioButtonExample);
 };
 
 }  // namespace examples
 
 #endif  // VIEWS_EXAMPLES_RADIO_BUTTON_EXAMPLE_H_