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

views/examples/example_base.h

Index: views/examples/example_base.h
diff --git a/views/examples/example_base.h b/views/examples/example_base.h
index 35898ebe5041e0c9a7f96a1c78ef53fde7d98581..fbe5cbc89d1d6cdfd0e9fe858ba552566a873375 100644
--- a/views/examples/example_base.h
+++ b/views/examples/example_base.h
@@ -8,8 +8,6 @@
 #include <string>
 
 #include "base/basictypes.h"
-#include "views/examples/examples_main.h"
-#include "views/window/window_delegate.h"
 
 namespace views {
 class View;
@@ -17,19 +15,27 @@ class View;
 
 namespace examples {
 
+class ExamplesMain;
+
 class ExampleBase {
+ public:
+  // Returns the view containing this example controls.
+  // This view is added as a tab to the example application.
+  views::View* GetExampleView() {
+    return container_;
+  }
+
+  // Sub-classes should creates and add the views to the given parent.
+  virtual void CreateExampleView(views::View* parent) = 0;
+
  protected:
-  explicit ExampleBase(ExamplesMain* main) : main_(main) {}
+  explicit ExampleBase(ExamplesMain* main);
   virtual ~ExampleBase() {}
 
   // Sub-classes should return the name of this test.
   // It is used as the title of the tab displaying this test's controls.
   virtual std::wstring GetExampleTitle() = 0;
 
-  // Sub-classes should return the view containing this example controls.
-  // This view is added as a tab to the example application.
-  virtual views::View* GetExampleView() = 0;
-
   // Prints a message in the status area, at the bottom of the window.
   void PrintStatus(const wchar_t* format, ...);
 
@@ -42,6 +48,9 @@ class ExampleBase {
   // The runner actually running this test.
   ExamplesMain* main_;
 
+  // The view containing example views.
+  views::View* container_;
+
   DISALLOW_COPY_AND_ASSIGN(ExampleBase);
 };