Implement RenderbufferGL.

BUG=angleproject:886

Change-Id: I7480943d678b2cdf6e997c3f8316acdef32f5f0d
Reviewed-on: https://chromium-review.googlesource.com/260889
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/renderer/gl/RendererGL.cpp b/src/libANGLE/renderer/gl/RendererGL.cpp
index f3bd7b3..19626e1 100644
--- a/src/libANGLE/renderer/gl/RendererGL.cpp
+++ b/src/libANGLE/renderer/gl/RendererGL.cpp
@@ -130,7 +130,7 @@
 
 RenderbufferImpl *RendererGL::createRenderbuffer()
 {
-    return new RenderbufferGL();
+    return new RenderbufferGL(mFunctions, mStateManager);
 }
 
 BufferImpl *RendererGL::createBuffer()