Enable sync for the settings from the Extension Settings API.

chrome/browser/sync/protocol/proto_value_conversions_unittest.cc

Index: chrome/browser/sync/protocol/proto_value_conversions_unittest.cc
diff --git a/chrome/browser/sync/protocol/proto_value_conversions_unittest.cc b/chrome/browser/sync/protocol/proto_value_conversions_unittest.cc
index 2a1f4e80ad312aa03e0e7c349ad9da9dd37f6bd7..9f859609a867193469b18fc513e2da79a0af06e8 100644
--- a/chrome/browser/sync/protocol/proto_value_conversions_unittest.cc
+++ b/chrome/browser/sync/protocol/proto_value_conversions_unittest.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/sync/protocol/autofill_specifics.pb.h"
 #include "chrome/browser/sync/protocol/bookmark_specifics.pb.h"
 #include "chrome/browser/sync/protocol/encryption.pb.h"
+#include "chrome/browser/sync/protocol/extension_setting_specifics.pb.h"
 #include "chrome/browser/sync/protocol/extension_specifics.pb.h"
 #include "chrome/browser/sync/protocol/nigori_specifics.pb.h"
 #include "chrome/browser/sync/protocol/password_specifics.pb.h"
@@ -44,7 +45,7 @@ TEST_F(ProtoValueConversionsTest, ProtoChangeCheck) {
   // If this number changes, that means we added or removed a data
   // type.  Don't forget to add a unit test for {New
   // type}SpecificsToValue below.
-  EXPECT_EQ(14, syncable::MODEL_TYPE_COUNT);
+  EXPECT_EQ(15, syncable::MODEL_TYPE_COUNT);
 
   // We'd also like to check if we changed any field in our messages.
   // However, that's hard to do: sizeof could work, but it's
@@ -99,6 +100,10 @@ TEST_F(ProtoValueConversionsTest, BookmarkSpecificsToValue) {
   TestSpecificsToValue(BookmarkSpecificsToValue);
 }
 
+TEST_F(ProtoValueConversionsTest, ExtensionSettingSpecificsToValue) {
+  TestSpecificsToValue(ExtensionSettingSpecificsToValue);
+}
+
 TEST_F(ProtoValueConversionsTest, ExtensionSpecificsToValue) {
   TestSpecificsToValue(ExtensionSpecificsToValue);
 }
@@ -144,6 +149,7 @@ TEST_F(ProtoValueConversionsTest, EntitySpecificsToValue) {
   SET_EXTENSION(autofill_profile);
   SET_EXTENSION(bookmark);
   SET_EXTENSION(extension);
+  SET_EXTENSION(extension_setting);
   SET_EXTENSION(nigori);
   SET_EXTENSION(password);
   SET_EXTENSION(preference);