[SafeBrowsing] Block dangerous unchecked downloads based on a Finch trial.

chrome/common/chrome_switches.h

 // 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.
 
 // Defines the shared command-line switches used by code in the Chrome
 // directory that don't have anywhere more specific to go.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 
@@ skipping 376 matching lines @@
 #endif
 
 #if defined(ENABLE_PLUGINS)
 extern const char kAllowNaClCrxFsAPI[];
 extern const char kAllowNaClFileHandleAPI[];
 extern const char kAllowNaClSocketAPI[];
 extern const char kDisablePluginPowerSaver[];
 extern const char kEnablePluginPowerSaver[];
 #endif
 
+#if defined(FULL_SAFE_BROWSING)
+extern const char kAllowUncheckedDangerousDownloads[];
+extern const char kDisallowUncheckedDangerousDownloads[];
+#endif
+
 #if defined(ENABLE_TASK_MANAGER)
 extern const char kDisableNewTaskManager[];
 #endif  // defined(ENABLE_TASK_MANAGER)
 
 bool AboutInSettingsEnabled();
 bool MdExtensionsEnabled();
 bool MdPolicyPageEnabled();
 bool MediaRouterEnabled();
 bool PdfMaterialUIEnabled();
 bool SettingsWindowEnabled();
 
 #if defined(OS_CHROMEOS)
 bool PowerOverlayEnabled();
 #endif
 
 #if defined(ENABLE_TASK_MANAGER)
 bool NewTaskManagerEnabled();
 #endif  // defined(ENABLE_TASK_MANAGER)
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_