Adds makeRenderer9/11 functions

TRAC #22134

Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1479 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/Renderer11.cpp b/src/libGLESv2/renderer/Renderer11.cpp
index d89dd3e..bdf7bc7 100644
--- a/src/libGLESv2/renderer/Renderer11.cpp
+++ b/src/libGLESv2/renderer/Renderer11.cpp
@@ -83,6 +83,12 @@
     }
 }
 
+Renderer11 *Renderer11::makeRenderer11(Renderer *renderer)
+{
+    ASSERT(dynamic_cast<rx::Renderer11*>(renderer) != NULL);
+    return static_cast<rx::Renderer11*>(renderer);
+}
+
 EGLint Renderer11::initialize()
 {
     mDxgiModule = LoadLibrary(TEXT("dxgi.dll"));