Add a headless configuration to Mojo's native viewport service

mojo/services/native_viewport/platform_viewport_headless.h

Index: mojo/services/native_viewport/platform_viewport_headless.h
diff --git a/mojo/services/native_viewport/platform_viewport_headless.h b/mojo/services/native_viewport/platform_viewport_headless.h
new file mode 100644
index 0000000000000000000000000000000000000000..ff5b18fbbd8580a626f933e0087140437af3779d
--- /dev/null
+++ b/mojo/services/native_viewport/platform_viewport_headless.h
@@ -0,0 +1,35 @@
+// Copyright 2013 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.
+
+#include "mojo/services/native_viewport/platform_viewport.h"
+#include "ui/gfx/rect.h"
+
+namespace mojo {
+
+class PlatformViewportHeadless : public PlatformViewport {
+ public:
+  virtual ~PlatformViewportHeadless();
+
+  static scoped_ptr<PlatformViewport> Create(Delegate* delegate);
+
+ private:
+  explicit PlatformViewportHeadless(Delegate* delegate);
+
+  // Overridden from PlatformViewport:
+  virtual void Init(const gfx::Rect& bounds) OVERRIDE;
+  virtual void Show() OVERRIDE;
+  virtual void Hide() OVERRIDE;
+  virtual void Close() OVERRIDE;
+  virtual gfx::Size GetSize() OVERRIDE;
+  virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
+  virtual void SetCapture() OVERRIDE;
+  virtual void ReleaseCapture() OVERRIDE;
+
+  Delegate* delegate_;
+  gfx::Rect bounds_;
+
+  DISALLOW_COPY_AND_ASSIGN(PlatformViewportHeadless);
+};
+
+}  // namespace mojo