WebView: carefully check size for SafeBrowsing interstitial

android_webview/browser/aw_safe_browsing_ui_manager.h

 // Copyright (c) 2017 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.
 //
 // The Safe Browsing service is responsible for downloading anti-phishing and
 // anti-malware tables and checking urls against them. This is android_webview
 // specific ui_manager.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_AW_SAFE_BROWSING_UI_MANAGER_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_SAFE_BROWSING_UI_MANAGER_H_
 
 #include "components/safe_browsing/base_ui_manager.h"
 #include "content/public/browser/web_contents.h"
 
 namespace android_webview {
 
 class AwSafeBrowsingUIManager : public safe_browsing::BaseUIManager {
  public:
   class UIManagerClient {
    public:
     static UIManagerClient* FromWebContents(content::WebContents* web_contents);
 
     // Whether this web contents can show an interstitial
     virtual bool CanShowInterstitial() = 0;
+    virtual bool CanShowBigInterstitial() = 0;
   };
 
   // Construction needs to happen on the UI thread.
   AwSafeBrowsingUIManager();
 
   void DisplayBlockingPage(const UnsafeResource& resource) override;
 
  protected:
   ~AwSafeBrowsingUIManager() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AwSafeBrowsingUIManager);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_SAFE_BROWSING_UI_MANAGER_H_