Making structure for ContentSettings and its corresponding strings.

chrome/browser/android/preferences/pref_service_bridge.cc

Index: chrome/browser/android/preferences/pref_service_bridge.cc
diff --git a/chrome/browser/android/preferences/pref_service_bridge.cc b/chrome/browser/android/preferences/pref_service_bridge.cc
index 963a006f59bbcb27e216e90caece5cb4f1c516cd..aa219f514cba4225251358ac79d34951ac477082 100644
--- a/chrome/browser/android/preferences/pref_service_bridge.cc
+++ b/chrome/browser/android/preferences/pref_service_bridge.cc
@@ -85,9 +85,9 @@ std::string GetStringForContentSettingsType(
     case CONTENT_SETTING_ASK:
       return "ask";
     case CONTENT_SETTING_SESSION_ONLY:
-      return "session";
+      return "session_only";
     case CONTENT_SETTING_DETECT_IMPORTANT_CONTENT:
-      return "detect";
+      return "detect_important_content";
     case CONTENT_SETTING_NUM_SETTINGS:
       return "num_settings";
     case CONTENT_SETTING_DEFAULT: