Respect the disabled extension list during binding initialization.

ui/gl/gl_gl_api_implementation.h

Index: ui/gl/gl_gl_api_implementation.h
diff --git a/ui/gl/gl_gl_api_implementation.h b/ui/gl/gl_gl_api_implementation.h
index 35d040c411da216587545ae9feb323f180ee376d..ab928f6590ef9f0328856caa6f0e72bc8b4162b8 100644
--- a/ui/gl/gl_gl_api_implementation.h
+++ b/ui/gl/gl_gl_api_implementation.h
@@ -68,6 +68,10 @@ class GL_EXPORT RealGLApi : public GLApiBase {
   const GLubyte* glGetStringFn(GLenum name) override;
   const GLubyte* glGetStringiFn(GLenum name, GLuint index) override;
 
+  const std::vector<std::string>& DisabledExtensions() {
+    return disabled_exts_;
+  }
+
  private:
   void InitializeFilteredExtensions();
   void glFinishFn() override;