From: csagan5 <32685696+csagan5@users.noreply.github.com>
Date: Sun, 6 Mar 2022 11:29:27 +0100
Subject: Revert Permit blocking of view-source

This reverts commit e72fc9b64116bf259e516096fcc60b58ae8ae1b3.

License: GPL-3.0-only - https://spdx.org/licenses/GPL-3.0-only.html
---
 .../policy_blocklist_navigation_throttle.cc   | 19 -------------------
 .../policy_blocklist_navigation_throttle.h    |  4 ----
 2 files changed, 23 deletions(-)

diff --git a/components/policy/content/policy_blocklist_navigation_throttle.cc b/components/policy/content/policy_blocklist_navigation_throttle.cc
--- a/components/policy/content/policy_blocklist_navigation_throttle.cc
+++ b/components/policy/content/policy_blocklist_navigation_throttle.cc
@@ -15,7 +15,6 @@
 #include "components/prefs/pref_service.h"
 #include "components/user_prefs/user_prefs.h"
 #include "content/public/browser/browser_context.h"
-#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/navigation_handle.h"
 #include "url/gurl.h"
 
@@ -43,19 +42,6 @@ PolicyBlocklistNavigationThrottle::PolicyBlocklistNavigationThrottle(
 PolicyBlocklistNavigationThrottle::~PolicyBlocklistNavigationThrottle() =
     default;
 
-bool PolicyBlocklistNavigationThrottle::IsBlockedViewSourceNavigation() {
-  content::NavigationEntry* nav_entry =
-      navigation_handle()->GetNavigationEntry();
-  if (!nav_entry || !nav_entry->IsViewSourceMode())
-    return false;
-
-  GURL view_source_url = GURL(std::string("view-source:") +
-                              navigation_handle()->GetURL().spec());
-
-  return (blocklist_service_->GetURLBlocklistState(view_source_url) ==
-          URLBlocklistState::URL_IN_BLOCKLIST);
-}
-
 content::NavigationThrottle::ThrottleCheckResult
 PolicyBlocklistNavigationThrottle::WillStartRequest() {
   const GURL& url = navigation_handle()->GetURL();
@@ -72,11 +58,6 @@ PolicyBlocklistNavigationThrottle::WillStartRequest() {
                                net::ERR_BLOCKED_BY_ADMINISTRATOR);
   }
 
-  if (IsBlockedViewSourceNavigation()) {
-    return ThrottleCheckResult(BLOCK_REQUEST,
-                               net::ERR_BLOCKED_BY_ADMINISTRATOR);
-  }
-
   if (blocklist_state == URLBlocklistState::URL_IN_ALLOWLIST)
     return PROCEED;
 
diff --git a/components/policy/content/policy_blocklist_navigation_throttle.h b/components/policy/content/policy_blocklist_navigation_throttle.h
--- a/components/policy/content/policy_blocklist_navigation_throttle.h
+++ b/components/policy/content/policy_blocklist_navigation_throttle.h
@@ -35,10 +35,6 @@ class PolicyBlocklistNavigationThrottle : public content::NavigationThrottle {
   const char* GetNameForLogging() override;
 
  private:
-  // Returns TRUE if this navigation is to view-source: and view-source is on
-  // the URLBlocklist.
-  bool IsBlockedViewSourceNavigation();
-
   // To ensure both allow and block policies override Safe Sites,
   // SafeSitesNavigationThrottle must be consulted as part of this throttle
   // rather than added separately to the list of throttles.
--
2.25.1