Remove unreleased web app frame code from ChromeOS

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

Index: chrome/browser/ui/views/frame/browser_non_client_frame_view_mus.h
diff --git a/chrome/browser/ui/views/frame/browser_non_client_frame_view_mus.h b/chrome/browser/ui/views/frame/browser_non_client_frame_view_mus.h
index 48b4bc43146f38445054fd59760c91f5f1344254..761f4d78366f52f3a78d954d50585121dff6dc04 100644
--- a/chrome/browser/ui/views/frame/browser_non_client_frame_view_mus.h
+++ b/chrome/browser/ui/views/frame/browser_non_client_frame_view_mus.h
@@ -18,7 +18,6 @@
 #endif
 
 class TabIconView;
-class WebAppLeftHeaderView;
 
 namespace ui {
 class Window;
@@ -41,8 +40,6 @@ class BrowserNonClientFrameViewMus : public BrowserNonClientFrameView,
   int GetTopInset(bool restored) const override;
   int GetThemeBackgroundXInset() const override;
   void UpdateThrobber(bool running) override;
-  void UpdateToolbar() override;
-  views::View* GetLocationIconView() const override;
   views::View* GetProfileSwitcherView() const override;
 
   // views::NonClientFrameView:
@@ -98,11 +95,6 @@ class BrowserNonClientFrameViewMus : public BrowserNonClientFrameView,
   // scheme than browser windows.
   bool UsePackagedAppHeaderStyle() const;
 
-  // Returns true if the header should be painted with a WebApp header style.
-  // The WebApp header style has a back button and title along with the usual
-  // accoutrements.
-  bool UseWebAppHeaderStyle() const;
-
   // Layout the incognito button.
   void LayoutIncognitoButton();