gpu: Bind dummy GL API when no context is current

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 30b07c7ca7d78bf00b9a78acc72801a621b70edb..9cbc1a9cbffbcc3e98aa6f79b15bb08d77e2a838 100644
--- a/ui/gl/gl_context_glx.cc
+++ b/ui/gl/gl_context_glx.cc
@@ -113,19 +113,19 @@ bool GLContextGLX::MakeCurrent(GLSurface* surface) {
   SetRealGLApi();
 
   SetCurrent(surface);
+  ScopedReleaseCurrent release_current(this, surface);
   if (!InitializeDynamicBindings()) {
-    ReleaseCurrent(surface);
     Destroy();
     return false;
   }
 
   if (!surface->OnMakeCurrent(this)) {
     LOG(ERROR) << "Could not make current.";
-    ReleaseCurrent(surface);
     Destroy();
     return false;
   }
 
+  release_current.Release();
   return true;
 }