Add a global on/off switch for content settings and expose a toggle on the Website Settings options…

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 "base/prefs/pref_service.h"
@@ skipping 998 matching lines @@
   EXPECT_EQ(CONTENT_SETTING_ALLOW,
             host_content_settings_map->GetContentSetting(
                 host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
   host_content_settings_map->SetContentSetting(
       pattern,
       ContentSettingsPattern::Wildcard(),
       CONTENT_SETTINGS_TYPE_IMAGES,
       std::string(),
       CONTENT_SETTING_DEFAULT);
 }
+
+TEST_F(HostContentSettingsMapTest, OverrideAllowedWebsiteSetting) {
+  TestingProfile profile;
+  HostContentSettingsMap* host_content_settings_map =
+      profile.GetHostContentSettingsMap();
+  GURL host("http://example.com/");
+  ContentSettingsPattern pattern =
+      ContentSettingsPattern::FromString("[*.]example.com");
+  host_content_settings_map->SetContentSetting(
+      pattern,
+      ContentSettingsPattern::Wildcard(),
+      CONTENT_SETTINGS_TYPE_GEOLOCATION,
+      std::string(),
+      CONTENT_SETTING_ALLOW);
+
+  EXPECT_EQ(CONTENT_SETTING_ALLOW,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));
+
+  // Disabling should override an allowed exception.
+  host_content_settings_map->SetContentSettingOverride(
+      CONTENT_SETTINGS_TYPE_GEOLOCATION, false);
+  EXPECT_EQ(CONTENT_SETTING_BLOCK,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));
+
+  host_content_settings_map->SetContentSettingOverride(
+      CONTENT_SETTINGS_TYPE_GEOLOCATION, true);
+  EXPECT_EQ(CONTENT_SETTING_ALLOW,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));
+}
+
+TEST_F(HostContentSettingsMapTest, OverrideAllowedDefaultSetting) {
+  TestingProfile profile;
+  HostContentSettingsMap* host_content_settings_map =
+      profile.GetHostContentSettingsMap();
+
+  // Check setting defaults.
+  EXPECT_EQ(CONTENT_SETTING_ALLOW,
+            host_content_settings_map->GetDefaultContentSetting(
+                CONTENT_SETTINGS_TYPE_IMAGES, NULL));
+
+  GURL host("http://example.com/");
+  EXPECT_EQ(CONTENT_SETTING_ALLOW,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
+
+  // Disabling should override an allowed default setting.
+  host_content_settings_map->SetContentSettingOverride(
+      CONTENT_SETTINGS_TYPE_IMAGES, false);
+  EXPECT_EQ(CONTENT_SETTING_BLOCK,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
+
+  // Enabling shouldn't override positively.
+  host_content_settings_map->SetContentSettingOverride(
+      CONTENT_SETTINGS_TYPE_IMAGES, true);
+  EXPECT_EQ(CONTENT_SETTING_ALLOW,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
+  host_content_settings_map->SetDefaultContentSetting(
+      CONTENT_SETTINGS_TYPE_IMAGES, CONTENT_SETTING_BLOCK);
+  EXPECT_EQ(CONTENT_SETTING_BLOCK,
+            host_content_settings_map->GetContentSetting(
+                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
+}