Fix opaque frame app mode windows to have correct toolbar/content separator.

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

Index: chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
diff --git a/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc b/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
index 0388890d041f42fbe7e2814aeec70fbc270e1259..c3bca787ce194e29dd1bced3417ca5be9f4ad7f4 100644
--- a/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
+++ b/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
@@ -112,6 +112,8 @@ class TestLayoutDelegate : public OpaqueBrowserFrameViewLayoutDelegate {
     return IsTabStripVisible() ? Tab::GetMinimumInactiveSize().height() : 0;
   }
 
+  bool IsToolbarVisible() const override { return true; }
+
   gfx::Size GetTabstripPreferredSize() const override {
     // Measured from Tabstrip::GetPreferredSize().
     return IsTabStripVisible() ? gfx::Size(78, 29) : gfx::Size(0, 0);