SafeBrowsing: allow WebView to customize the Help Center URL

components/security_interstitials/core/safe_browsing_loud_error_ui.cc

 // 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.
 
 #include "components/security_interstitials/core/safe_browsing_loud_error_ui.h"
 
 #include "base/i18n/time_formatting.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/google/core/browser/google_util.h"
 #include "components/security_interstitials/core/common_string_util.h"
 #include "components/security_interstitials/core/metrics_helper.h"
 #include "components/strings/grit/components_strings.h"
 #include "net/base/escape.h"
+#include "net/base/url_util.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace security_interstitials {
 namespace {
 
-// URL for the Help Center article on Safe Browsing warnings.
-const char kLearnMore[] =
-    "https://support.google.com/chrome/?p=cpn_safe_browsing";
+// URL for the Help Center
+const char kLearnMore[] = "https://support.google.com/chrome/";
+
+// p= URL query parameter for the Safe Browsing article
+const char kDefaultPlink[] = "cpn_safe_browsing";
 
 // For malware interstitial pages, we link the problematic URL to Google's
 // diagnostic page.
 #if defined(GOOGLE_CHROME_BUILD)
 const char kSbDiagnosticUrl[] =
     "https://www.google.com/safebrowsing/"
     "diagnostic?site=%s&client=googlechrome";
 #else
 const char kSbDiagnosticUrl[] =
     "https://www.google.com/safebrowsing/diagnostic?site=%s&client=chromium";
@@ skipping 124 matching lines @@
     case CMD_SHOW_MORE_SECTION: {
       controller()->metrics_helper()->RecordUserInteraction(
           security_interstitials::MetricsHelper::SHOW_ADVANCED);
       break;
     }
     case CMD_OPEN_HELP_CENTER: {
       // User pressed "Learn more".
       controller()->metrics_helper()->RecordUserInteraction(
           security_interstitials::MetricsHelper::SHOW_LEARN_MORE);
       GURL learn_more_url(kLearnMore);
+      learn_more_url = net::AppendQueryParameter(
+          learn_more_url, "p",
+          get_plink() == nullptr ? kDefaultPlink : get_plink());
       learn_more_url =
           google_util::AppendGoogleLocaleParam(learn_more_url, app_locale());
       controller()->OpenUrlInCurrentTab(learn_more_url);
       break;
     }
     case CMD_RELOAD: {
       controller()->metrics_helper()->RecordUserInteraction(
           security_interstitials::MetricsHelper::RELOAD);
       controller()->Reload();
       break;
@@ skipping 118 matching lines @@
                             l10n_util::GetStringFUTF16(
                                 is_scout_reporting_enabled()
                                     ? IDS_SAFE_BROWSING_SCOUT_REPORTING_AGREE
                                     : IDS_SAFE_BROWSING_MALWARE_REPORTING_AGREE,
                                 base::UTF8ToUTF16(privacy_link)));
   load_time_data->SetBoolean(security_interstitials::kBoxChecked,
                              is_extended_reporting_enabled());
 }
 
 }  // security_interstitials