[Do not commit] Track revocations in content_settings::Observer

chrome/browser/permissions/permission_uma_util.cc

 // 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.
 
 #include "chrome/browser/permissions/permission_uma_util.h"
 
 #include <utility>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/permissions/permission_manager.h"
 #include "chrome/browser/permissions/permission_util.h"
 #include "chrome/browser/profiles/profile.h"
+#include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/rappor/rappor_service.h"
 #include "components/rappor/rappor_utils.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/common/origin_util.h"
 #include "url/gurl.h"
 
 // UMA keys need to be statically initialized so plain function would not
 // work. Use a Macro instead.
 #define PERMISSION_ACTION_UMA(secure_origin, permission, permission_secure, \
                               permission_insecure, action)                  \
@@ skipping 259 matching lines @@
                                           const GURL& revoked_origin) {
   // TODO(tsergeant): Expand metrics definitions for revocation to include all
   // permissions.
   if (permission == PermissionType::NOTIFICATIONS ||
       permission == PermissionType::GEOLOCATION ||
       permission == PermissionType::AUDIO_CAPTURE ||
       permission == PermissionType::VIDEO_CAPTURE) {
     RecordPermissionAction(permission, REVOKED, revoked_origin);
   }
 }
+
+void PermissionUmaUtil::OnContentsettingChanged(
+      Profile* profile,
+      const ContentSettingsPattern& primary_pattern,
+      const ContentSettingsPattern& secondary_pattern,
+      ContentSettingsType content_type,
+      ContentSetting previous_value) {
+  if (primary_pattern.HasNoWildcard()) {
+    GURL primary_url(primary_pattern.ToString());
+    GURL secondary_url;
+    if (secondary_pattern.HasNoWildcard())
+      secondary_url = GURL(secondary_pattern.ToString());
+    else
+      secondary_url = primary_url;
+
+    ContentSetting new_value =
+        HostContentSettingsMapFactory::GetForProfile(profile)
+            ->GetContentSetting(primary_url, secondary_url, content_type, "");
+
+    if (previous_value == CONTENT_SETTING_ALLOW &&
+        (new_value == CONTENT_SETTING_BLOCK ||
+         new_value == CONTENT_SETTING_DEFAULT)) {
+      // This was a revocation action
+    }
+  }
+}