Factor common code into native_viewport_controller.cc

mojo/services/native_viewport/native_viewport.h

Index: mojo/services/native_viewport/native_viewport.h
diff --git a/mojo/services/native_viewport/native_viewport.h b/mojo/services/native_viewport/native_viewport.h
index f2f2692ebcabb48e87d2b00f4dbc562145c09f39..a2ffebb2be72decb2c4cc0ae5eb488a7ef610921 100644
--- a/mojo/services/native_viewport/native_viewport.h
+++ b/mojo/services/native_viewport/native_viewport.h
@@ -6,16 +6,8 @@
 #define MOJO_SERVICES_NATIVE_VIEWPORT_NATIVE_VIEWPORT_H_
 
 #include "base/memory/scoped_ptr.h"
-
-namespace gfx {
-class Size;
-}
-
-namespace gpu {
-namespace gles2 {
-class GLES2Interface;
-}
-}
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/size.h"
 
 namespace ui {
 class Event;
@@ -32,11 +24,10 @@ class NativeViewportDelegate {
  public:
   virtual ~NativeViewportDelegate() {}
 
+  virtual void OnResized(const gfx::Size& size) = 0;
+  virtual void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) = 0;
   virtual bool OnEvent(ui::Event* event) = 0;
   virtual void OnDestroyed() = 0;
-  virtual void OnGLContextAvailable(gpu::gles2::GLES2Interface* gl) = 0;
-  virtual void OnGLContextLost() = 0;
-  virtual void OnResized(const gfx::Size& size) = 0;
 };
 
 // Encapsulation of platform-specific Viewport.
@@ -44,6 +35,7 @@ class NativeViewport {
  public:
   virtual ~NativeViewport() {}
 
+  virtual gfx::Size GetSize() = 0;
   virtual void Close() = 0;
 
   static scoped_ptr<NativeViewport> Create(shell::Context* context,