Revert of Remove Android SampleApp

include/views/SkOSWindow_Android.h

Index: include/views/SkOSWindow_Android.h
diff --git a/include/views/SkOSWindow_Android.h b/include/views/SkOSWindow_Android.h
new file mode 100644
index 0000000000000000000000000000000000000000..234e65c256093ca86a2df1c63a164f659e6893f7
--- /dev/null
+++ b/include/views/SkOSWindow_Android.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2011 Skia
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkOSWindow_Android_DEFINED
+#define SkOSWindow_Android_DEFINED
+
+#include "SkWindow.h"
+
+#include <EGL/egl.h>
+
+struct SkAndroidWindow {
+    EGLDisplay fDisplay;
+    EGLSurface fSurface;
+    EGLContext fContext;
+};
+
+class SkOSWindow : public SkWindow {
+public:
+    SkOSWindow(void*);
+    ~SkOSWindow();
+
+    enum SkBackEndTypes {
+        kNone_BackEndType,
+        kNativeGL_BackEndType,
+    };
+
+    bool attach(SkBackEndTypes attachType, int msaaSampleCount, bool deepColor,
+                AttachmentInfo* info);
+    void release();
+    void present();
+    bool makeFullscreen() { return true; }
+    void closeWindow();
+    void setVsync(bool);
+    bool destroyRequested() { return fDestroyRequested; }
+
+protected:
+    // overrides from SkWindow
+    virtual void onHandleInval(const SkIRect&);
+    virtual void onSetTitle(const char title[]);
+
+private:
+    SkAndroidWindow fWindow;
+    ANativeWindow* fNativeWindow;
+    bool fDestroyRequested;
+
+    typedef SkWindow INHERITED;
+};
+
+#endif