Add message and Help Center link to the chooser UI

chrome/browser/ui/website_settings/chooser_bubble_delegate.cc

Index: chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
diff --git a/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc b/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
index 8b209753ca10767380b26589ac56f26ee0fc7d5c..a0fdc295c9911910395461f78f47bb6eedcc6fc7 100644
--- a/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
+++ b/chrome/browser/ui/website_settings/chooser_bubble_delegate.cc
@@ -2,9 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "chrome/browser/net/referrer.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/website_settings/chooser_bubble_delegate.h"
 #include "content/public/browser/web_contents.h"
+#include "url/gurl.h"
 
 ChooserBubbleDelegate::ChooserBubbleDelegate(content::RenderFrameHost* owner)
     : browser_(chrome::FindBrowserWithWebContents(
@@ -13,6 +15,12 @@ ChooserBubbleDelegate::ChooserBubbleDelegate(content::RenderFrameHost* owner)
 
 ChooserBubbleDelegate::~ChooserBubbleDelegate() {}
 
+void ChooserBubbleDelegate::OpenHelpCenterUrl() const {
+  browser_->OpenURL(content::OpenURLParams(
+      GURL(GetHelpCenterUrl()), content::Referrer(), NEW_FOREGROUND_TAB,
+      ui::PAGE_TRANSITION_AUTO_TOPLEVEL, false /* is_renderer_initiated */));
+}
+
 std::string ChooserBubbleDelegate::GetName() const {
   return "ChooserBubble";
 }