Page Info: Hide default permissions with a value of Ask if the default is Ask.

chrome/browser/ui/website_settings/website_settings.cc

Index: chrome/browser/ui/website_settings/website_settings.cc
diff --git a/chrome/browser/ui/website_settings/website_settings.cc b/chrome/browser/ui/website_settings/website_settings.cc
index a8549dddb7e8f68511f29b23c857127dbecb6272..0e51b6a6040048b4cec3917dd80c7b63a43bd3f9 100644
--- a/chrome/browser/ui/website_settings/website_settings.cc
+++ b/chrome/browser/ui/website_settings/website_settings.cc
@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "base/command_line.h"
+#include "base/feature_list.h"
 #include "base/i18n/time_formatting.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ -83,6 +84,10 @@ using content::BrowserThread;
 
 namespace {
 
+// TODO(crbug.com/698469): Remove kPageInfoAlwaysShowAllPermissions
+const base::Feature kPageInfoAlwaysShowAllPermissions{
+    "PageInfoAlwaysShowAllPermissions", base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Events for UMA. Do not reorder or change!
 enum SSLCertificateDecisionsDidRevoke {
   USER_CERT_DECISIONS_NOT_REVOKED = 0,
@@ -204,6 +209,25 @@ WebsiteSettings::ChooserUIInfo kChooserUIInfo[] = {
      IDS_WEBSITE_SETTINGS_DELETE_USB_DEVICE, "name"},
 };
 
+// Show a permission unless the following conditions hold:
+// - Its current value is ASK or DEFAULT.
+// - Its built-in default value is ASK.
+bool ShouldShowPermission(WebsiteSettingsUI::PermissionInfo permission_info) {
+  if (base::FeatureList::IsEnabled(kPageInfoAlwaysShowAllPermissions))
+    return true;
+
+  if (permission_info.default_setting != CONTENT_SETTING_ASK)
+    return true;
+
+  switch (permission_info.setting) {
+    case CONTENT_SETTING_DEFAULT:
+    case CONTENT_SETTING_ASK:
+      return false;
+    default:
+      return true;
+  }
+}
+
 }  // namespace
 
 WebsiteSettings::WebsiteSettings(
@@ -674,7 +698,9 @@ void WebsiteSettings::PresentSitePermissions() {
                                                       NULL);
     }
 
-    permission_info_list.push_back(permission_info);
+    if (ShouldShowPermission(permission_info)) {
+      permission_info_list.push_back(permission_info);
+    }
   }
 
   for (const ChooserUIInfo& ui_info : kChooserUIInfo) {