Refactor VR math off of GVR types, onto gfx types where possible.

chrome/browser/android/vr_shell/non_presenting_gvr_delegate.cc

Index: chrome/browser/android/vr_shell/non_presenting_gvr_delegate.cc
diff --git a/chrome/browser/android/vr_shell/non_presenting_gvr_delegate.cc b/chrome/browser/android/vr_shell/non_presenting_gvr_delegate.cc
index 79d92e35a43bc9d322a9ed1409c01c4a2164a6a1..f8cc3e1f9883f958e2061e973294cdbf7b2c6a8c 100644
--- a/chrome/browser/android/vr_shell/non_presenting_gvr_delegate.cc
+++ b/chrome/browser/android/vr_shell/non_presenting_gvr_delegate.cc
@@ -155,9 +155,9 @@ void NonPresentingGvrDelegate::CreateVRDisplayInfo(
     return;
   }
 
-  gvr::Sizei webvr_size = GvrDelegate::GetRecommendedWebVrSize(gvr_api_.get());
-  DVLOG(1) << __FUNCTION__ << ": resize recommended to " << webvr_size.width
-           << "x" << webvr_size.height;
+  gfx::Size webvr_size = GvrDelegate::GetRecommendedWebVrSize(gvr_api_.get());
+  DVLOG(1) << __FUNCTION__ << ": resize recommended to " << webvr_size.width()
+           << "x" << webvr_size.height();
   callback.Run(
       GvrDelegate::CreateVRDisplayInfo(gvr_api_.get(), webvr_size, device_id));
 }