Rename GetPreferredSize to CalculatePreferredSize in ash/

ash/system/user/rounded_image_view.cc

Index: ash/system/user/rounded_image_view.cc
diff --git a/ash/system/user/rounded_image_view.cc b/ash/system/user/rounded_image_view.cc
index 385bfac15e781a91e12a07e2893c03f364c94f13..378b6ae1be5476efe3ea7d47502b9a3c30e6ff69 100644
--- a/ash/system/user/rounded_image_view.cc
+++ b/ash/system/user/rounded_image_view.cc
@@ -43,7 +43,7 @@ void RoundedImageView::SetCornerRadii(int top_left,
   corner_radius_[3] = bottom_left;
 }
 
-gfx::Size RoundedImageView::GetPreferredSize() const {
+gfx::Size RoundedImageView::CalculatePreferredSize() const {
   return gfx::Size(image_size_.width() + GetInsets().width(),
                    image_size_.height() + GetInsets().height());
 }