include: Rename vkLayer.h -> vk_layer.h and vkIcd.h -> vk_icd.h
diff --git a/layers/draw_state.h b/layers/draw_state.h
index c46a28a..fb62fb1 100644
--- a/layers/draw_state.h
+++ b/layers/draw_state.h
@@ -21,7 +21,7 @@
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */
-#include "vkLayer.h"
+#include "vk_layer.h"
 #include <vector>
 
 using namespace std;