Refactor TizenRenderers (#215)

Author: swift-kim

shell/platform/tizen/tizen_renderer.h

@@ -57,6 +57,7 @@ class TizenRenderer {
                                   int32_t height,
                                   int32_t degree) = 0;
   virtual void SetPreferredOrientations(const std::vector<int>& rotations) = 0;
+
   virtual bool IsSupportedExtension(const char* name) = 0;
 
  protected: