Ensure the entire page is secure for PWAs.

chrome/browser/installable/installable_manager.h

 // Copyright 2016 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 CHROME_BROWSER_INSTALLABLE_INSTALLABLE_MANAGER_H_
 #define CHROME_BROWSER_INSTALLABLE_INSTALLABLE_MANAGER_H_
 
 #include <map>
 #include <memory>
 #include <utility>
@@ skipping 63 matching lines @@
 
 // This class is responsible for fetching the resources required to check and
 // install a site.
 class InstallableManager
     : public content::WebContentsObserver,
       public content::WebContentsUserData<InstallableManager> {
  public:
   explicit InstallableManager(content::WebContents* web_contents);
   ~InstallableManager() override;
 
+  // Returns true if the overall security state of |web_contents| is sufficient
+  // to be considered installable.
+  static bool IsContentSecure(content::WebContents* web_contents);
+
   // Returns the minimum icon size in pixels for a site to be installable.
   // TODO(dominickn): consolidate this concept with minimum_icon_size_in_px
   // across all platforms.
   static int GetMinimumIconSizeInPx();
 
   // Get the installable data, fetching the resources specified in |params|.
   // |callback| is invoked synchronously (i.e. no via PostTask on the UI thread
   // when the data is ready; the synchronous execution ensures that the
   // references |callback| receives in its InstallableData argument are valid.
   //
@@ skipping 88 matching lines @@
   std::map<IconParams, IconProperty> icons_;
 
   bool is_active_;
 
   base::WeakPtrFactory<InstallableManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InstallableManager);
 };
 
 #endif  // CHROME_BROWSER_INSTALLABLE_INSTALLABLE_MANAGER_H_