Move GL-specific include files to their own subdirectory, to better
coexist alongside D3D backend.
Requires gyp change.

http://codereview.appspot.com/5665045/



git-svn-id: http://skia.googlecode.com/svn/trunk@3185 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/GLInterfaceValidation.cpp b/tests/GLInterfaceValidation.cpp
index 2557c4c..5cee0e4 100755
--- a/tests/GLInterfaceValidation.cpp
+++ b/tests/GLInterfaceValidation.cpp
@@ -7,8 +7,8 @@
  */
 
 #include "Test.h"
-#include "SkNativeGLContext.h"
-#include "SkMesaGLContext.h"
+#include "gl/SkNativeGLContext.h"
+#include "gl/SkMesaGLContext.h"
 
 static void GLInterfaceValidationTest(skiatest::Reporter* reporter) {
     typedef const GrGLInterface* (*interfaceFactory)();