Ensure real GL Api is set before making GL calls.

ui/gl/gl_context_glx.cc

Index: ui/gl/gl_context_glx.cc
diff --git a/ui/gl/gl_context_glx.cc b/ui/gl/gl_context_glx.cc
index 662538beb589e070bc8eab9b9d95e037bda43deb..eb4e366ab4fae59749f656113b7be6b587c6c785 100644
--- a/ui/gl/gl_context_glx.cc
+++ b/ui/gl/gl_context_glx.cc
@@ -123,6 +123,9 @@ bool GLContextGLX::MakeCurrent(GLSurface* surface) {
     return false;
   }
 
+  // Set this as soon as the context is current, since we might call into GL.
+  SetRealGLApi();
+
   SetCurrent(surface);
   if (!InitializeExtensionBindings()) {
     ReleaseCurrent(surface);
@@ -137,7 +140,6 @@ bool GLContextGLX::MakeCurrent(GLSurface* surface) {
     return false;
   }
 
-  SetRealGLApi();
   return true;
 }