emulator opengl: pool of fixups to the host side.

Those are the host side fixups required for the system to load
without failure to the point of bootanimation is run.

Change-Id: I42eebb123b05aaf6a0671e91e77a4ba6b330b852

tools/emulator/opengl/host/libs/libOpenglRender/WindowSurface.h

@@ -37,6 +37,7 @@ public:
     EGLSurface getEGLSurface() const { return m_eglSurface; }
 
     void setColorBuffer(ColorBufferPtr p_colorBuffer);
+    void flushColorBuffer();
     void bind(RenderContextPtr p_ctx, SurfaceBindType p_bindType);
 
 private: