SafeBrowsing: allow WebView to customize the Help Center URL

chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
index f979d96e055b90522abcf8159a8bfd656243f855..b0ccf2600d5eb9979de6e968b1d2a460a8f03182 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
@@ -40,6 +40,8 @@ const char kEventNameHarmful[] = "harmful_interstitial_";
 const char kEventNamePhishing[] = "phishing_interstitial_";
 const char kEventNameOther[] = "safebrowsing_other_interstitial_";
 
+const char kHelpCenterLink[] = "cpn_safe_browsing";
+
 }  // namespace
 
 // static
@@ -76,7 +78,8 @@ class SafeBrowsingBlockingPageFactoryImpl
         web_contents->GetBrowserContext()->IsOffTheRecord(),
         IsExtendedReportingEnabled(*prefs), IsScout(*prefs),
         is_proceed_anyway_disabled,
-        BaseBlockingPage::IsMainPageLoadBlocked(unsafe_resources));
+        BaseBlockingPage::IsMainPageLoadBlocked(unsafe_resources),
+        kHelpCenterLink);
 
     return new SafeBrowsingBlockingPage(ui_manager, web_contents,
                                         main_frame_url, unsafe_resources,