Fix device scale factor for interstitials.

content/browser/frame_host/interstitial_page_impl.cc

 // Copyright 2013 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.
 
 #include "content/browser/frame_host/interstitial_page_impl.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 925 matching lines @@
 
 void InterstitialPageImpl::UnderlyingContentObserver::WebContentsDestroyed() {
   interstitial_->OnNavigatingAwayOrTabClosing();
 }
 
 TextInputManager* InterstitialPageImpl::GetTextInputManager() {
   return !web_contents_ ? nullptr : static_cast<WebContentsImpl*>(web_contents_)
                                         ->GetTextInputManager();
 }
 
+void InterstitialPageImpl::GetScreenInfo(blink::WebScreenInfo* screen_info) {
+  WebContentsImpl* web_contents_impl =
+      static_cast<WebContentsImpl*>(web_contents_);
+  if (!web_contents_impl) {
+    WebContentsView::GetDefaultScreenInfo(screen_info);
+    return;
+  }
+
+  web_contents_impl->GetView()->GetScreenInfo(screen_info);
+}
+
+void InterstitialPageImpl::UpdateDeviceScaleFactor(double device_scale_factor) {
+  WebContentsImpl* web_contents_impl =
+      static_cast<WebContentsImpl*>(web_contents_);
+  if (!web_contents_impl)
+    return;
+
+  web_contents_impl->UpdateDeviceScaleFactor(device_scale_factor);
+}
+
 }  // namespace content