Fixes WebVR presentation from within VRShell.

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 97c61e1b493b8f7a80e555559ec69caf86c59ca1..0d3dcf4d00ea5e2d446416102b05c33e0f7ab3e7 100644
--- a/chrome/browser/android/vr_shell/vr_shell.h
+++ b/chrome/browser/android/vr_shell/vr_shell.h
@@ -202,7 +202,7 @@ class VrShell : public device::PresentingGvrDelegate,
   void MainFrameWasResized(bool width_changed) override;
   void WebContentsDestroyed() override;
 
-  // device::GvrDelegate implementation
+  // device::GvrDelegate implementation.
   void SetWebVRSecureOrigin(bool secure_origin) override;
   void SubmitWebVRFrame(int16_t frame_index,
                         const gpu::MailboxHolder& mailbox) override;
@@ -219,6 +219,10 @@ class VrShell : public device::PresentingGvrDelegate,
       const base::Callback<void(device::mojom::VRDisplayInfoPtr)>& callback,
       uint32_t device_id) override;
 
+  // device::PresentingGvrDelegate implementation.
+  void SetSubmitClient(
+      device::mojom::VRSubmitFrameClientPtr submit_client) override;
+
   void ProcessTabArray(JNIEnv* env, jobjectArray tabs, bool incognito);
 
   bool vr_shell_enabled_;