Media permissions: Remove plumbing for insecure pepper requests in Chrome

chrome/browser/media/media_stream_device_permissions.cc

 // Copyright 2014 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 "chrome/browser/media/media_stream_device_permissions.h"
 
 #include <stddef.h>
 
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/origin_util.h"
 #include "extensions/common/constants.h"
 #include "url/gurl.h"
 
-bool ShouldPersistContentSetting(ContentSetting setting,
-                                 const GURL& origin,
-                                 bool is_pepper_request) {
-  // When the request is from an invalid scheme we don't persist it.
-  if (!ContentSettingsPattern::FromURLNoWildcard(origin).IsValid())
-    return false;
-
-  // It's safe to persist block settings all the time.
-  if (setting == CONTENT_SETTING_BLOCK)
-    return true;
-
-  // Pepper requests should always be persisted to prevent annoying users of
-  // plugins.
-  if (is_pepper_request)
-    return true;
-
-  // We persist requests from secure origins.
-  if (content::IsOriginSecure(origin))
-    return true;
-
-  return false;
-}
-
 MediaStreamDevicePolicy GetDevicePolicy(const Profile* profile,
                                         const GURL& security_origin,
                                         const char* policy_name,
                                         const char* whitelist_policy_name) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   // If the security origin policy matches a value in the whitelist, allow it.
   // Otherwise, check the |policy_name| master switch for the default behavior.
 
   const PrefService* prefs = profile->GetPrefs();
@@ skipping 16 matching lines @@
 
   // If a match was not found, check if audio capture is otherwise disallowed
   // or if the user should be prompted.  Setting the policy value to "true"
   // is equal to not setting it at all, so from hereon out, we will return
   // either POLICY_NOT_SET (prompt) or ALWAYS_DENY (no prompt, no access).
   if (!prefs->GetBoolean(policy_name))
     return ALWAYS_DENY;
 
   return POLICY_NOT_SET;
 }