Add GeolocationContentSettingsMap, a geolocation-specific variant of HostCont...

chrome/common/content_settings.h

Index: chrome/common/content_settings.h
===================================================================
--- chrome/common/content_settings.h	(revision 41987)
+++ chrome/common/content_settings.h	(working copy)
@@ -17,6 +17,10 @@
   CONTENT_SETTING_NUM_SETTINGS
 };
 
+// Range-checked conversion of an int to a ContentSetting, for use when reading
+// prefs off disk.
+ContentSetting IntToContentSetting(int content_setting);
+
 // Aggregates the permissions for the different content types.
 struct ContentSettings {
   ContentSettings() {