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..d5ab073e40daf4c48411c10556e030fb469d2361 100644
--- a/ui/gl/gl_context_glx.cc
+++ b/ui/gl/gl_context_glx.cc
@@ -98,6 +98,7 @@ bool GLContextGLX::MakeCurrent(GLSurface* surface) {
   if (IsCurrent(surface))
     return true;
 
+  ScopedReleaseCurrent release_current;
   TRACE_EVENT0("gpu", "GLContextGLX::MakeCurrent");
   if (!glXMakeContextCurrent(
       display_,
@@ -114,18 +115,17 @@ bool GLContextGLX::MakeCurrent(GLSurface* surface) {
 
   SetCurrent(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.Cancel();
   return true;
 }