[vr] Migrate from vr::Colorf to SkColor

chrome/browser/android/vr_shell/vr_shell_gl.cc

Index: chrome/browser/android/vr_shell/vr_shell_gl.cc
diff --git a/chrome/browser/android/vr_shell/vr_shell_gl.cc b/chrome/browser/android/vr_shell/vr_shell_gl.cc
index 5369bbfbf90b14797ea21affb3ec7d2858929c37..9fffc436ee9f0a78ff6d5f6c7e52667724842335 100644
--- a/chrome/browser/android/vr_shell/vr_shell_gl.cc
+++ b/chrome/browser/android/vr_shell/vr_shell_gl.cc
@@ -1132,9 +1132,11 @@ void VrShellGl::DrawWorldElements(const vr::Mat4f& head_pose) {
     glEnable(GL_DEPTH_TEST);
     glDepthMask(GL_TRUE);
 
-    const vr::Colorf& backgroundColor = scene_->GetBackgroundColor();
-    glClearColor(backgroundColor.r, backgroundColor.g, backgroundColor.b,
-                 backgroundColor.a);
+    const SkColor backgroundColor = scene_->GetBackgroundColor();
+    glClearColor(SkColorGetR(backgroundColor) / 255.0,
+                 SkColorGetG(backgroundColor) / 255.0,
+                 SkColorGetB(backgroundColor) / 255.0,
+                 SkColorGetA(backgroundColor) / 255.0);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   }
   std::vector<const UiElement*> elements = scene_->GetWorldElements();