Respect the disabled extension list during binding initialization.

ui/gl/gl_bindings.h

Index: ui/gl/gl_bindings.h
diff --git a/ui/gl/gl_bindings.h b/ui/gl/gl_bindings.h
index 7002efef7509fc4f6670fa4996a0c35e621e0527..878e77674406fb79f8006b59ab5b10f45079e2dc 100644
--- a/ui/gl/gl_bindings.h
+++ b/ui/gl/gl_bindings.h
@@ -345,6 +345,7 @@ struct GL_EXPORT DriverGL {
 
 struct GL_EXPORT DriverOSMESA {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings();
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -359,6 +360,7 @@ struct GL_EXPORT DriverOSMESA {
 #if defined(OS_WIN)
 struct GL_EXPORT DriverWGL {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings();
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -374,6 +376,7 @@ struct GL_EXPORT DriverWGL {
 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
 struct GL_EXPORT DriverEGL {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings();
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -389,6 +392,7 @@ struct GL_EXPORT DriverEGL {
 #if defined(USE_X11)
 struct GL_EXPORT DriverGLX {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings();
   void InitializeDebugBindings();
   void ClearBindings();