Add onFontNameChanged event to Font Settings API

chrome/browser/extensions/extension_preference_api.cc

Index: chrome/browser/extensions/extension_preference_api.cc
diff --git a/chrome/browser/extensions/extension_preference_api.cc b/chrome/browser/extensions/extension_preference_api.cc
index d33850699a7e8cbc77ad0b8d6a3d202161cbd28c..464ec81d324157f6e6d451c4fadd2e935f0e753e 100644
--- a/chrome/browser/extensions/extension_preference_api.cc
+++ b/chrome/browser/extensions/extension_preference_api.cc
@@ -135,32 +135,6 @@ class InvertBooleanTransformer : public PrefTransformerInterface {
   }
 };
 
-// Returns a string constant (defined in the API) indicating the level of
-// control this extension has over the specified preference.
-const char* GetLevelOfControl(
-    Profile* profile,
-    const std::string& extension_id,
-    const std::string& browser_pref,
-    bool incognito) {
-  PrefService* prefs = incognito ? profile->GetOffTheRecordPrefs()
-                                 : profile->GetPrefs();
-  const PrefService::Preference* pref =
-      prefs->FindPreference(browser_pref.c_str());
-  CHECK(pref);
-  ExtensionPrefs* ep = profile->GetExtensionService()->extension_prefs();
-
-  if (!pref->IsExtensionModifiable())
-    return keys::kNotControllable;
-
-  if (ep->DoesExtensionControlPref(extension_id, browser_pref, incognito))
-    return keys::kControlledByThisExtension;
-
-  if (ep->CanExtensionControlPref(extension_id, browser_pref, incognito))
-    return keys::kControllableByThisExtension;
-
-  return keys::kControlledByOtherExtensions;
-}
-
 class PrefMapping {
  public:
   static PrefMapping* GetInstance() {
@@ -321,7 +295,8 @@ void ExtensionPreferenceEventRouter::OnPrefChanged(
         (*it)->HasAPIPermission(permission) &&
         (!incognito || extension_service->CanCrossIncognito(*it))) {
       std::string level_of_control =
-          GetLevelOfControl(profile_, extension_id, browser_pref, incognito);
+          helpers::GetLevelOfControl(profile_, extension_id, browser_pref,
+                                     incognito);
       dict->SetString(keys::kLevelOfControl, level_of_control);
 
       std::string json_args;
@@ -390,7 +365,8 @@ bool GetPreferenceFunction::RunImpl() {
 
   // Retrieve level of control.
   std::string level_of_control =
-      GetLevelOfControl(profile_, extension_id(), browser_pref, incognito);
+      helpers::GetLevelOfControl(profile_, extension_id(), browser_pref,
+                                 incognito);
   result->SetString(keys::kLevelOfControl, level_of_control);
 
   // Retrieve pref value.