Hook up insecure content warnings for http webVR presentation.

chrome/browser/android/vr_shell/ui_scene.h

Index: chrome/browser/android/vr_shell/ui_scene.h
diff --git a/chrome/browser/android/vr_shell/ui_scene.h b/chrome/browser/android/vr_shell/ui_scene.h
index 9ab39b64c4de6d186e6bd67c9694319959f2e465..a70a3c087b209086e89a44f4539fec465dee5b5f 100644
--- a/chrome/browser/android/vr_shell/ui_scene.h
+++ b/chrome/browser/android/vr_shell/ui_scene.h
@@ -66,6 +66,8 @@ class UiScene {
   float GetBackgroundDistance() const;
   bool GetWebVrRenderingEnabled() const;
 
+  void OnGLInitialized();
+
  private:
   void ApplyRecursiveTransforms(UiElement* element);
 
@@ -74,6 +76,7 @@ class UiScene {
   vr::Colorf background_color_ = {0.1f, 0.1f, 0.1f, 1.0f};
   float background_distance_ = 10.0f;
   bool webvr_rendering_enabled_ = true;
+  bool gl_initialized_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(UiScene);
 };