Add content_settings::PolicyProvider and a set of new policies to managed content settings.

chrome/browser/content_settings/content_settings_provider.h

Index: chrome/browser/content_settings/content_settings_provider.h
diff --git a/chrome/browser/content_settings/content_settings_provider.h b/chrome/browser/content_settings/content_settings_provider.h
index 621c5222888982b7b6a3aa91c62d26498a0be622..024873e54e544f0103061bfa6f62ee8788ccf249 100644
--- a/chrome/browser/content_settings/content_settings_provider.h
+++ b/chrome/browser/content_settings/content_settings_provider.h
@@ -26,6 +26,7 @@ class DefaultProviderInterface {
   // |content_type|, or CONTENT_SETTING_DEFAULT if nothing be provided for this
   // type.
   virtual ContentSetting ProvideDefaultSetting(
+

[Bernhard Bauer, 2011/02/23 13:18:53]

Nit: Remove blank line.

[markusheintz_, 2011/02/23 18:42:09]

Done.

       ContentSettingsType content_type) const = 0;
 
   // Notifies the provider that the host content settings map would like to
@@ -65,6 +66,11 @@ class ProviderInterface {
 
   virtual ~ProviderInterface() {}
 
+  // Returns true whether the content settings provider manages the
+  // |content_type|.
+  virtual bool ContentSettingsTypeIsManaged(
+      ContentSettingsType content_type) = 0;
+
   // Returns a single ContentSetting which applies to a given |requesting_url|,
   // |embedding_url| pair or CONTENT_SETTING_DEFAULT, if no rule applies. For
   // ContentSettingsTypes that require a resource identifier to be specified,