VR: Add a loading indicator to the scene.

chrome/browser/android/vr_shell/vr_gl_thread.h

Index: chrome/browser/android/vr_shell/vr_gl_thread.h
diff --git a/chrome/browser/android/vr_shell/vr_gl_thread.h b/chrome/browser/android/vr_shell/vr_gl_thread.h
index d218990e36e93fe0392607c1aa927d8430f96e71..962b767607764b0e7d4fc6388fc616447859840a 100644
--- a/chrome/browser/android/vr_shell/vr_gl_thread.h
+++ b/chrome/browser/android/vr_shell/vr_gl_thread.h
@@ -59,7 +59,7 @@ class VrGLThread : public base::Thread,
   // UiInterface implementation (VrShell calling to the UI).
   void SetFullscreen(bool enabled) override;
   void SetHistoryButtonsEnabled(bool can_go_back, bool can_go_forward) override;
-  void SetLoadProgress(double progress) override;
+  void SetLoadProgress(float progress) override;
   void SetLoading(bool loading) override;
   void SetSecurityLevel(int level) override;
   void SetURL(const GURL& gurl) override;