Draw WebVR security overlay with a non-reprojected viewport

chrome/browser/android/vr_shell/vr_shell.h

Index: chrome/browser/android/vr_shell/vr_shell.h
diff --git a/chrome/browser/android/vr_shell/vr_shell.h b/chrome/browser/android/vr_shell/vr_shell.h
index c5fc1b7d55959b062303bff24e218587387e7022..b2c3caa1d4a78d3c4645355b53f91f490cb8c2c2 100644
--- a/chrome/browser/android/vr_shell/vr_shell.h
+++ b/chrome/browser/android/vr_shell/vr_shell.h
@@ -145,6 +145,8 @@ class VrShell : public device::GvrDelegate {
   std::unique_ptr<gvr::GvrApi> gvr_api_;
   std::unique_ptr<gvr::BufferViewportList> buffer_viewport_list_;
   std::unique_ptr<gvr::BufferViewport> buffer_viewport_;
+  std::unique_ptr<gvr::BufferViewport> overlay_left_viewport_;
+  std::unique_ptr<gvr::BufferViewport> overlay_right_viewport_;
   std::unique_ptr<gvr::SwapChain> swap_chain_;
 
   gvr::Sizei render_size_;
@@ -169,6 +171,7 @@ class VrShell : public device::GvrDelegate {
   VrInputManager* current_input_target_ = nullptr;
   int ui_tex_width_ = 0;
   int ui_tex_height_ = 0;
+  bool dom_contents_loaded_ = false;

[cjgrant, 2016/10/21 18:29:03]

This will probably disappear with my change.  Native rendering shouldn't care if
the DOM contents have loaded, because the HTML UI will drive the security
warnings.

 
   bool webvr_mode_ = false;
   bool webvr_secure_origin_ = false;