Add a shortcut that opens Certificate Viewer from the Page Info flyout

chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm

 // Copyright 2014 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.
 
 #import "chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.h"
 
 #import <AppKit/AppKit.h>
 
 #include <cmath>
 
@@ skipping 396 matching lines @@
       GURL(chrome::kChromeUIContentSettingsURL), content::Referrer(),
       WindowOpenDisposition::NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK,
       false));
 }
 
 // TODO(lgarron): Move some of this to the presenter for separation of concerns
 // and platform unification. (https://crbug.com/571533)
 - (void)openConnectionHelp:(id)sender {
   DCHECK(webContents_);
   DCHECK(presenter_);
-  presenter_->RecordWebsiteSettingsAction(
-      WebsiteSettings::WEBSITE_SETTINGS_CONNECTION_HELP_OPENED);
-  webContents_->OpenURL(content::OpenURLParams(
-      GURL(chrome::kPageInfoHelpCenterURL), content::Referrer(),
-      WindowOpenDisposition::NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK,
-      false));
+
+  // Shift+Click of this link launches the Certificate Viewer directly.
+  BOOL shiftKeyDown = ([[NSApp currentEvent] modifierFlags] &
+                       (NSShiftKeyMask | NSAlphaShiftKeyMask)) != 0;
+  if (certificate_ && shiftKeyDown) {
+    presenter_->RecordWebsiteSettingsAction(
+        WebsiteSettings::WEBSITE_SETTINGS_CERTIFICATE_DIALOG_OPENED);
+    [self showCertificateInfo:sender];
+  } else {
+    // Otherwise, open the Connection Security Help topic.
+    presenter_->RecordWebsiteSettingsAction(
+        WebsiteSettings::WEBSITE_SETTINGS_CONNECTION_HELP_OPENED);
+    webContents_->OpenURL(content::OpenURLParams(
+        GURL(chrome::kPageInfoHelpCenterURL), content::Referrer(),
+        WindowOpenDisposition::NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK,
+        false));
+  }
 }
 
 // Handler for the link button to show certificate information.
 - (void)showCertificateInfo:(id)sender {
   DCHECK(certificate_.get());
   DCHECK(presenter_);
   presenter_->RecordWebsiteSettingsAction(
       WebsiteSettings::WEBSITE_SETTINGS_CERTIFICATE_DIALOG_OPENED);
   ShowCertificateViewer(webContents_, [self parentWindow], certificate_.get());
 }
@@ skipping 776 matching lines @@
     const CookieInfoList& cookie_info_list) {
   [bubble_controller_ setCookieInfo:cookie_info_list];
 }
 
 void WebsiteSettingsUIBridge::SetPermissionInfo(
     const PermissionInfoList& permission_info_list,
     ChosenObjectInfoList chosen_object_info_list) {
   [bubble_controller_ setPermissionInfo:permission_info_list
                        andChosenObjects:std::move(chosen_object_info_list)];
 }