Content Settings: Add RevocationObserver to measure when permissions are revoked

chrome/browser/content_settings/host_content_settings_map_unittest.cc

 // Copyright (c) 2012 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 "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/content_settings/content_settings_mock_observer.h"
@@ skipping 1052 matching lines @@
   host_content_settings_map->AddObserver(&mock_observer);
 
   EXPECT_EQ(CONTENT_SETTING_ALLOW,
             host_content_settings_map->GetContentSetting(
                 host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
   host_content_settings_map->SetContentSettingDefaultScope(
       host, GURL(), CONTENT_SETTINGS_TYPE_IMAGES, std::string(),
       CONTENT_SETTING_DEFAULT);
 }
 
+TEST_F(HostContentSettingsMapTest, RevocationObserver) {
+  TestingProfile profile;
+  HostContentSettingsMap* map =
+      HostContentSettingsMapFactory::GetForProfile(&profile);
+  content_settings::MockRevocationObserver mock_observer;
+  map->AddObserver(&mock_observer);
+
+  GURL host("http://example.com/");
+
+  ContentSettingsPattern pattern =
+      ContentSettingsPattern::FromURLNoWildcard(host);
+
+  // Allow->Block triggers a revocation.
+
+  EXPECT_CALL(mock_observer,
+              OnContentSettingRevoked(host, host,
+                                      CONTENT_SETTINGS_TYPE_GEOLOCATION, ""));
+
+  map->SetContentSettingDefaultScope(
+      host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, "", CONTENT_SETTING_ALLOW);
+
+  map->SetContentSettingDefaultScope(
+      host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, "", CONTENT_SETTING_BLOCK);
+
+  ::testing::Mock::VerifyAndClearExpectations(&mock_observer);
+
+  // Block->Allow does not trigger a revocation.
+  EXPECT_CALL(mock_observer,
+              OnContentSettingRevoked(host, host,
+                                      CONTENT_SETTINGS_TYPE_GEOLOCATION, ""))
+      .Times(0);
+
+  map->SetContentSettingDefaultScope(
+      host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, "", CONTENT_SETTING_ALLOW);
+
+  ::testing::Mock::VerifyAndClearExpectations(&mock_observer);
+
+  // Allow->Default triggers a revocation when default is 'ask'.
+  EXPECT_CALL(mock_observer,
+              OnContentSettingRevoked(host, host,
+                                      CONTENT_SETTINGS_TYPE_GEOLOCATION, ""));
+
+  map->SetDefaultContentSetting(CONTENT_SETTINGS_TYPE_GEOLOCATION,
+                                CONTENT_SETTING_ASK);
+
+  map->SetContentSettingDefaultScope(host, host,
+                                     CONTENT_SETTINGS_TYPE_GEOLOCATION, "",
+                                     CONTENT_SETTING_DEFAULT);
+
+  // Allow->Default does not trigger a revocation when default is 'allow'.
+  EXPECT_CALL(mock_observer,
+              OnContentSettingRevoked(host, host,
+                                      CONTENT_SETTINGS_TYPE_GEOLOCATION, ""))
+      .Times(0);
+
+  map->SetDefaultContentSetting(CONTENT_SETTINGS_TYPE_GEOLOCATION,
+                                CONTENT_SETTING_ALLOW);
+
+  map->SetContentSettingDefaultScope(host, host,
+                                     CONTENT_SETTINGS_TYPE_GEOLOCATION, "",
+                                     CONTENT_SETTING_ALLOW);
+  map->SetContentSettingDefaultScope(host, host,
+                                     CONTENT_SETTINGS_TYPE_GEOLOCATION, "",
+                                     CONTENT_SETTING_DEFAULT);
+
+  ::testing::Mock::VerifyAndClearExpectations(&mock_observer);
+}
+
 TEST_F(HostContentSettingsMapTest, GuestProfile) {
   TestingProfile profile;
   profile.SetGuestSession(true);
   HostContentSettingsMap* host_content_settings_map =
       HostContentSettingsMapFactory::GetForProfile(&profile);
 
   GURL host("http://example.com/");
   ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
 
@@ skipping 51 matching lines @@
   profile.GetPrefs()->Set(GetPrefName(CONTENT_SETTINGS_TYPE_IMAGES), *value);
 
   // Test that during construction all the prefs get cleared.
   HostContentSettingsMapFactory::GetForProfile(&profile);
 
   const base::DictionaryValue* all_settings_dictionary =
       profile.GetPrefs()->GetDictionary(
           GetPrefName(CONTENT_SETTINGS_TYPE_IMAGES));
   EXPECT_TRUE(all_settings_dictionary->empty());
 }