[Policy Experimental] Add policies to allow Cookies and Pop-ups exceptions.

components/content_settings/core/browser/host_content_settings_map.h

Index: components/content_settings/core/browser/host_content_settings_map.h
diff --git a/components/content_settings/core/browser/host_content_settings_map.h b/components/content_settings/core/browser/host_content_settings_map.h
index 17d9e126481f3c1910ff9b54f18441a9a880663b..c938e1b3136d2395b011480e08ce067d5c7c7b08 100644
--- a/components/content_settings/core/browser/host_content_settings_map.h
+++ b/components/content_settings/core/browser/host_content_settings_map.h
@@ -36,6 +36,7 @@ class Value;
 
 namespace content_settings {
 class ObservableProvider;
+class PolicyProvider;
 class ProviderInterface;
 class PrefProvider;
 class TestUtils;
@@ -58,7 +59,12 @@ class HostContentSettingsMap : public content_settings::Observer,
     CUSTOM_EXTENSION_PROVIDER,
     PREF_PROVIDER,
     DEFAULT_PROVIDER,
-    NUM_PROVIDER_TYPES,
+    NUM_PROVIDER_TYPES
+  };
+
+  struct ContentSettingWithProviderType {
+    ContentSetting content_setting = CONTENT_SETTING_DEFAULT;
+    ProviderType provider_type = NUM_PROVIDER_TYPES;
   };
 
   // This should be called on the UI thread, otherwise |thread_checker_| handles
@@ -75,13 +81,22 @@ class HostContentSettingsMap : public content_settings::Observer,
       ProviderType type,
       scoped_ptr<content_settings::ObservableProvider> provider);
 
-  // Returns the default setting for a particular content type. If |provider_id|
-  // is not NULL, the id of the provider which provided the default setting is
-  // assigned to it.
+  // Returns the default setting and the provider type for a given content type.
+  //
+  // This may be called on any thread.
+  ContentSettingWithProviderType
+      GetDefaultContentSetting(ContentSettingsType content_type) const;
+
+  // Alternative interface that returns the content setting, and writes the
+  // provider name to |provider_name| if not null.
   //
   // This may be called on any thread.
   ContentSetting GetDefaultContentSetting(ContentSettingsType content_type,
-                                          std::string* provider_id) const;
+                                          std::string* provider_name) const;
+
+  // Returns whether user preference exceptions may be enabled for a given
+  // content type.
+  bool AreUserExceptionsAllowedForType(ContentSettingsType content_type) const;
 
   // Returns a single |ContentSetting| which applies to the given URLs.  Note
   // that certain internal schemes are whitelisted. For |CONTENT_TYPE_COOKIES|,
@@ -291,6 +306,11 @@ class HostContentSettingsMap : public content_settings::Observer,
 
   ~HostContentSettingsMap() override;
 
+  // For testing.
+  content_settings::PrefProvider* GetPrefProvider() {
+    return pref_provider_;
+  }
+
   ContentSetting GetDefaultContentSettingFromProvider(
       ContentSettingsType content_type,
       content_settings::ProviderInterface* provider) const;
@@ -351,8 +371,6 @@ class HostContentSettingsMap : public content_settings::Observer,
       ContentSettingsPattern* primary_pattern,
       ContentSettingsPattern* secondary_pattern);
 
-  content_settings::PrefProvider* GetPrefProvider();
-
 #ifndef NDEBUG
   // This starts as the thread ID of the thread that constructs this
   // object, and remains until used by a different thread, at which
@@ -374,6 +392,12 @@ class HostContentSettingsMap : public content_settings::Observer,
   // before any other uses of it.
   ProviderMap content_settings_providers_;
 
+  // content_settings_providers_[POLICY_PROVIDER] but specialized.
+  content_settings::PolicyProvider* policy_provider_ = nullptr;
+
+  // content_settings_providers_[PREF_PROVIDER] but specialized.
+  content_settings::PrefProvider* pref_provider_ = nullptr;
+
   base::ThreadChecker thread_checker_;
 
   base::ObserverList<content_settings::Observer> observers_;