Revert "Add namespace sandbox to about page."

chrome/browser/ui/webui/about_ui.cc

 // Copyright (c) 2012 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/ui/webui/about_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 825 matching lines @@
   AppendBody(&data);
   base::FilePath binary = base::CommandLine::ForCurrentProcess()->GetProgram();
   data.append(l10n_util::GetStringFUTF8(
       IDS_ABOUT_LINUX_PROXY_CONFIG_BODY,
       l10n_util::GetStringUTF16(IDS_PRODUCT_NAME),
       base::ASCIIToUTF16(binary.BaseName().value())));
   AppendFooter(&data);
   return data;
 }
 
-void AboutSandboxRow(std::string* data, int name_id, bool good) {
+void AboutSandboxRow(std::string* data, const std::string& prefix, int name_id,
+                     bool good) {
   data->append("<tr><td>");
+  data->append(prefix);
   data->append(l10n_util::GetStringUTF8(name_id));
   if (good) {
     data->append("</td><td style='color: green;'>");
     data->append(
         l10n_util::GetStringUTF8(IDS_CONFIRM_MESSAGEBOX_YES_BUTTON_LABEL));
   } else {
     data->append("</td><td style='color: red;'>");
     data->append(
         l10n_util::GetStringUTF8(IDS_CONFIRM_MESSAGEBOX_NO_BUTTON_LABEL));
   }
   data->append("</td></tr>");
 }
 
 std::string AboutSandbox() {
   std::string data;
   AppendHeader(&data, 0, l10n_util::GetStringUTF8(IDS_ABOUT_SANDBOX_TITLE));
   AppendBody(&data);
   data.append("<h1>");
   data.append(l10n_util::GetStringUTF8(IDS_ABOUT_SANDBOX_TITLE));
   data.append("</h1>");
 
   // Get expected sandboxing status of renderers.
   const int status = content::ZygoteHost::GetInstance()->GetSandboxStatus();
 
   data.append("<table>");
 
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_SUID_SANDBOX,
+  AboutSandboxRow(&data,
+                  std::string(),
+                  IDS_ABOUT_SANDBOX_SUID_SANDBOX,
                   status & content::kSandboxLinuxSUID);
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_NAMESPACE_SANDBOX,
-                  status & content::kSandboxLinuxUserNS);
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_PID_NAMESPACES,
+  AboutSandboxRow(&data, "&nbsp;&nbsp;", IDS_ABOUT_SANDBOX_PID_NAMESPACES,
                   status & content::kSandboxLinuxPIDNS);
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_NET_NAMESPACES,
+  AboutSandboxRow(&data, "&nbsp;&nbsp;", IDS_ABOUT_SANDBOX_NET_NAMESPACES,
                   status & content::kSandboxLinuxNetNS);
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_SECCOMP_BPF_SANDBOX,
+  AboutSandboxRow(&data,
+                  std::string(),
+                  IDS_ABOUT_SANDBOX_SECCOMP_BPF_SANDBOX,
                   status & content::kSandboxLinuxSeccompBPF);
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_SECCOMP_BPF_SANDBOX_TSYNC,
+  AboutSandboxRow(&data,
+                  std::string(),
+                  IDS_ABOUT_SANDBOX_SECCOMP_BPF_SANDBOX_TSYNC,
                   status & content::kSandboxLinuxSeccompTSYNC);
-  AboutSandboxRow(&data, IDS_ABOUT_SANDBOX_YAMA_LSM,
+  AboutSandboxRow(&data,
+                  std::string(),
+                  IDS_ABOUT_SANDBOX_YAMA_LSM,
                   status & content::kSandboxLinuxYama);
 
   data.append("</table>");
 
-  // Require either the setuid or namespace sandbox for our first-layer sandbox.
-  bool good_layer1 = (status & content::kSandboxLinuxSUID ||
-                      status & content::kSandboxLinuxUserNS) &&
+  // The setuid sandbox is required as our first-layer sandbox.
+  bool good_layer1 = status & content::kSandboxLinuxSUID &&
                      status & content::kSandboxLinuxPIDNS &&
                      status & content::kSandboxLinuxNetNS;
   // A second-layer sandbox is also required to be adequately sandboxed.
   bool good_layer2 = status & content::kSandboxLinuxSeccompBPF;
   bool good = good_layer1 && good_layer2;
 
   if (good) {
     data.append("<p style='color: green'>");
     data.append(l10n_util::GetStringUTF8(IDS_ABOUT_SANDBOX_OK));
   } else {
@@ skipping 255 matching lines @@
   Profile* profile = Profile::FromWebUI(web_ui);
 
 #if defined(ENABLE_THEMES)
   // Set up the chrome://theme/ source.
   ThemeSource* theme = new ThemeSource(profile);
   content::URLDataSource::Add(profile, theme);
 #endif
 
   content::URLDataSource::Add(profile, new AboutUIHTMLSource(name, profile));
 }