Remove unused IsToolbarVisible from GlassBrowserFrameView

Change-Id: If0429ea349a174d4520c59ccf9dc5091707fd6f3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1895016
Commit-Queue: Bret Sepulveda <bsep@chromium.org>
Auto-Submit: Alan Cutter <alancutter@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#793553}

chrome/browser/ui/views/frame/glass_browser_frame_view.cc

@@ -536,11 +536,6 @@ int GlassBrowserFrameView::MinimizeButtonX() const {
              : frame()->GetMinimizeButtonOffset();
 }
 
-bool GlassBrowserFrameView::IsToolbarVisible() const {
-  return browser_view()->IsToolbarVisible() &&
-      !browser_view()->toolbar()->GetPreferredSize().IsEmpty();
-}
-
 bool GlassBrowserFrameView::ShowCustomIcon() const {
   // Web-app windows don't include the window icon as per UI mocks.
   return !web_app_frame_toolbar() && ShouldCustomDrawSystemTitlebar() &&

chrome/browser/ui/views/frame/glass_browser_frame_view.h

@@ -117,9 +117,6 @@ class GlassBrowserFrameView : public BrowserNonClientFrameView,
   // edge of the caption buttons.
   int MinimizeButtonX() const;
 
-  // Returns whether the toolbar is currently visible.
-  bool IsToolbarVisible() const;
-
   bool ShowCustomIcon() const;
   bool ShowCustomTitle() const;
   bool ShowSystemIcon() const;