Cross-process frames should be notified of device scale factor changes.

content/browser/web_contents/web_contents_view_mus.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MUS_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MUS_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 28 matching lines @@
 
   WebContents* web_contents();
 
  private:
   void SizeChangedCommon(const gfx::Size& size);
 
   // WebContentsView implementation:
   gfx::NativeView GetNativeView() const override;
   gfx::NativeView GetContentNativeView() const override;
   gfx::NativeWindow GetTopLevelNativeWindow() const override;
+  void GetScreenInfo(blink::WebScreenInfo* web_screen_info) const override;
   void GetContainerBounds(gfx::Rect* out) const override;
   void SizeContents(const gfx::Size& size) override;
   void Focus() override;
   void SetInitialFocus() override;
   void StoreFocus() override;
   void RestoreFocus() override;
   DropData* GetDropData() const override;
   gfx::Rect GetViewBounds() const override;
   void CreateView(const gfx::Size& initial_size,
                   gfx::NativeView context) override;
@@ skipping 51 matching lines @@
   std::unique_ptr<WebContentsViewDelegate> delegate_;
   std::unique_ptr<aura::Window> aura_window_;
   std::unique_ptr<ui::ScopedWindowPtr> mus_window_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewMus);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MUS_H_